[Settings] Create a global static instance of SettingsUtils (#44064)

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fix/what does it change/how was it tested (even manually, if necessary)?
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## Summary of the Pull Request

SettingsUtils is initialized multiple times over the whole solution.
This creates one singeltone instance (with the default settings), so it
only has to be initialized once (and improve performance a bit with
that)

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## PR Checklist

- [ ] Closes: #xxx
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issues) -->
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
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pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
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pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

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wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

src/modules/Hosts/Hosts/Settings/UserSettings.cs

@@ -62,7 +62,7 @@ namespace Hosts.Settings
 
         public UserSettings()
         {
-            _settingsUtils = new SettingsUtils();
+            _settingsUtils = SettingsUtils.Default;
             var defaultSettings = new HostsProperties();
             ShowStartupWarning = defaultSettings.ShowStartupWarning;
             LoopbackDuplicates = defaultSettings.LoopbackDuplicates;

src/modules/MeasureTool/MeasureToolUI/Settings.cs

@@ -11,7 +11,7 @@ namespace MeasureToolUI
 {
     public sealed class Settings
     {
-        private static readonly SettingsUtils ModuleSettings = new();
+        private static readonly SettingsUtils ModuleSettings = SettingsUtils.Default;
 
         public MeasureToolMeasureStyle DefaultMeasureStyle
         {

src/modules/MouseUtils/MouseJumpUI/Helpers/SettingsHelper.cs

@@ -53,7 +53,7 @@ internal sealed class SettingsHelper
         lock (this.LockObject)
         {
             {
-                var settingsUtils = new SettingsUtils();
+                var settingsUtils = SettingsUtils.Default;
 
                 // set this to 1 to disable retries
                 var remainingRetries = 5;

src/modules/MouseWithoutBorders/App/Class/Setting.cs

@@ -192,7 +192,7 @@ namespace MouseWithoutBorders.Class
 
         internal Settings()
         {
-            _settingsUtils = new SettingsUtils();
+            _settingsUtils = SettingsUtils.Default;
 
             _watcher = SettingsHelper.GetFileWatcher("MouseWithoutBorders", "settings.json", () =>
             {

src/modules/PowerOCR/PowerOCR/Settings/UserSettings.cs

@@ -29,7 +29,7 @@ namespace PowerOCR.Settings
         [ImportingConstructor]
         public UserSettings(Helpers.IThrottledActionInvoker throttledActionInvoker)
         {
-            _settingsUtils = new SettingsUtils();
+            _settingsUtils = SettingsUtils.Default;
             ActivationShortcut = new SettingItem<string>(DefaultActivationShortcut);
             PreferredLanguage = new SettingItem<string>(string.Empty);
 

src/modules/Workspaces/WorkspacesEditor/Utils/Settings.cs

@@ -9,7 +9,7 @@ namespace WorkspacesEditor.Utils
     public class Settings
     {
         private const string WorkspacesModuleName = "Workspaces";
-        private static readonly SettingsUtils _settingsUtils = new();
+        private static readonly SettingsUtils _settingsUtils = SettingsUtils.Default;
 
         public static WorkspacesSettings ReadSettings()
         {

src/modules/Workspaces/WorkspacesEditor/ViewModels/MainViewModel.cs

@@ -133,7 +133,7 @@ namespace WorkspacesEditor.ViewModels
                 _orderByIndex = value;
                 OnPropertyChanged(new PropertyChangedEventArgs(nameof(WorkspacesView)));
                 settings.Properties.SortBy = (WorkspacesProperties.SortByProperty)value;
-                settings.Save(new SettingsUtils());
+                settings.Save(SettingsUtils.Default);
             }
         }
 

src/modules/awake/Awake/Core/Manager.cs

@@ -60,7 +60,7 @@ namespace Awake.Core
         {
             _tokenSource = new CancellationTokenSource();
             _stateQueue = [];
-            ModuleSettings = new SettingsUtils();
+            ModuleSettings = SettingsUtils.Default;
         }
 
         internal static void StartMonitor()

src/modules/awake/Awake/Program.cs

@@ -51,7 +51,7 @@ namespace Awake
 
         private static async Task<int> Main(string[] args)
         {
-            _settingsUtils = new SettingsUtils();
+            _settingsUtils = SettingsUtils.Default;
 
             LockMutex = new Mutex(true, Core.Constants.AppName, out bool instantiated);
 

src/modules/colorPicker/ColorPickerUI/Settings/UserSettings.cs

@@ -45,7 +45,7 @@ namespace ColorPicker.Settings
         [ImportingConstructor]
         public UserSettings(Helpers.IThrottledActionInvoker throttledActionInvoker)
         {
-            _settingsUtils = new SettingsUtils();
+            _settingsUtils = SettingsUtils.Default;
             ChangeCursor = new SettingItem<bool>(true);
             ActivationShortcut = new SettingItem<string>(DefaultActivationShortcut);
             CopiedColorRepresentation = new SettingItem<string>(ColorRepresentationType.HEX.ToString());

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.PowerToys/Components/UtilityProvider.cs

@@ -27,7 +27,7 @@ namespace Microsoft.PowerToys.Run.Plugin.PowerToys
 
         public UtilityProvider()
         {
-            var settingsUtils = new SettingsUtils();
+            var settingsUtils = SettingsUtils.Default;
             var generalSettings = settingsUtils.GetSettings<GeneralSettings>();
 
             _utilities = new List<Utility>();
@@ -228,7 +228,7 @@ namespace Microsoft.PowerToys.Run.Plugin.PowerToys
                     {
                         retryCount++;
 
-                        var settingsUtils = new SettingsUtils();
+                        var settingsUtils = SettingsUtils.Default;
                         var generalSettings = settingsUtils.GetSettings<GeneralSettings>();
 
                         foreach (var u in _utilities)

src/modules/launcher/PowerLauncher/SettingsReader.cs

@@ -38,7 +38,7 @@ namespace PowerLauncher
 
         public SettingsReader(PowerToysRunSettings settings, ThemeManager themeManager)
         {
-            _settingsUtils = new SettingsUtils();
+            _settingsUtils = SettingsUtils.Default;
             _settings = settings;
             _themeManager = themeManager;
 

src/modules/peek/Peek.FilePreviewer/Models/PreviewSettings.cs

@@ -34,7 +34,7 @@ namespace Peek.FilePreviewer.Models
 
         public PreviewSettings()
         {
-            _settingsUtils = new SettingsUtils();
+            _settingsUtils = SettingsUtils.Default;
             SourceCodeWrapText = false;
             SourceCodeTryFormat = false;
             SourceCodeFontSize = 14;

src/modules/peek/Peek.UI/Services/UserSettings.cs

@@ -77,7 +77,7 @@ namespace Peek.UI
 
         public UserSettings()
         {
-            _settingsUtils = new SettingsUtils();
+            _settingsUtils = SettingsUtils.Default;
 
             LoadSettingsFromJson();
 

src/modules/poweraccent/PowerAccent.Core/Services/SettingsService.cs

@@ -24,7 +24,7 @@ public class SettingsService
 
     public SettingsService(KeyboardListener keyboardListener)
     {
-        _settingsUtils = new SettingsUtils();
+        _settingsUtils = SettingsUtils.Default;
         _keyboardListener = keyboardListener;
         ReadSettings();
         _watcher = Helper.GetFileWatcher(PowerAccentModuleName, "settings.json", () => { ReadSettings(); });

src/modules/poweraccent/PowerAccent.Core/Tools/CharactersUsageInfo.cs

@@ -19,7 +19,7 @@ namespace PowerAccent.Core.Tools
 
         public CharactersUsageInfo()
         {
-            _filePath = new SettingsUtils().GetSettingsFilePath(PowerAccentSettings.ModuleName, "UsageInfo.json");
+            _filePath = SettingsUtils.Default.GetSettingsFilePath(PowerAccentSettings.ModuleName, "UsageInfo.json");
             var data = GetUsageInfoData();
             _characterUsageCounters = data.CharacterUsageCounters;
             _characterUsageTimestamp = data.CharacterUsageTimestamp;

src/modules/previewpane/MonacoPreviewHandler/Settings.cs

@@ -16,7 +16,7 @@ namespace Microsoft.PowerToys.PreviewHandler.Monaco
     /// </summary>
     public class Settings
     {
-        private static SettingsUtils moduleSettings = new SettingsUtils();
+        private static SettingsUtils moduleSettings = SettingsUtils.Default;
 
         /// <summary>
         /// Gets a value indicating whether word wrapping should be applied. Set by PT settings.

src/modules/previewpane/StlThumbnailProvider/StlThumbnailProvider.cs

@@ -155,7 +155,7 @@ namespace Microsoft.PowerToys.ThumbnailHandler.Stl
             {
                 try
                 {
-                    var moduleSettings = new SettingsUtils();
+                    var moduleSettings = SettingsUtils.Default;
 
                     var colorString = moduleSettings.GetSettings<PowerPreviewSettings>(PowerPreviewSettings.ModuleName).Properties.StlThumbnailColor.Value;
 

src/modules/previewpane/SvgPreviewHandler/Settings.cs

@@ -8,7 +8,7 @@ namespace SvgPreviewHandler
 {
     internal sealed class Settings
     {
-        private static readonly SettingsUtils ModuleSettings = new SettingsUtils();
+        private static readonly SettingsUtils ModuleSettings = SettingsUtils.Default;
 
         public int ColorMode
         {