common: refactor common library pt2 (#8588)

- remove common lib
- split settings, remove common-md
- move ipc interop/kb_layout to interop
- rename core -> settings, settings -> old_settings
- os-detect header-only; interop -> PowerToysInterop
- split notifications, move single-use headers where they're used
- winstore lib
- rename com utils
- rename Updating and Telemetry projects
- rename core -> settings-ui and remove examples folder
- rename settings-ui folder + consisent common/version include

src/settings-ui/Microsoft.PowerToys.Settings.UI/Views/GeneralPage.xaml.cs

@@ -0,0 +1,106 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
+using Microsoft.PowerToys.Settings.UI.Library;
+using Microsoft.PowerToys.Settings.UI.Library.Utilities;
+using Microsoft.PowerToys.Settings.UI.Library.ViewModels;
+using Windows.ApplicationModel.Resources;
+using Windows.Data.Json;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+
+namespace Microsoft.PowerToys.Settings.UI.Views
+{
+    /// <summary>
+    /// General Settings Page.
+    /// </summary>
+    public sealed partial class GeneralPage : Page
+    {
+        /// <summary>
+        /// Gets or sets view model.
+        /// </summary>
+        public GeneralViewModel ViewModel { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GeneralPage"/> class.
+        /// General Settings page constructor.
+        /// </summary>
+        [SuppressMessage("Design", "CA1031:Do not catch general exception types", Justification = "Exceptions from the IPC response handler should be caught and logged.")]
+        public GeneralPage()
+        {
+            InitializeComponent();
+
+            // Load string resources
+            ResourceLoader loader = ResourceLoader.GetForViewIndependentUse();
+            var settingsUtils = new SettingsUtils();
+
+            ViewModel = new GeneralViewModel(
+                SettingsRepository<GeneralSettings>.GetInstance(settingsUtils),
+                loader.GetString("GeneralSettings_RunningAsAdminText"),
+                loader.GetString("GeneralSettings_RunningAsUserText"),
+                ShellPage.IsElevated,
+                ShellPage.IsUserAnAdmin,
+                UpdateUIThemeMethod,
+                ShellPage.SendDefaultIPCMessage,
+                ShellPage.SendRestartAdminIPCMessage,
+                ShellPage.SendCheckForUpdatesIPCMessage);
+
+            ShellPage.ShellHandler.IPCResponseHandleList.Add((JsonObject json) =>
+            {
+                try
+                {
+                    string version = json.GetNamedString("version");
+                    bool isLatest = json.GetNamedBoolean("isVersionLatest");
+
+                    var str = string.Empty;
+                    if (isLatest)
+                    {
+                        str = ResourceLoader.GetForCurrentView().GetString("GeneralSettings_VersionIsLatest");
+                    }
+                    else if (!string.IsNullOrEmpty(version))
+                    {
+                        str = ResourceLoader.GetForCurrentView().GetString("GeneralSettings_NewVersionIsAvailable");
+                        if (!string.IsNullOrEmpty(str))
+                        {
+                            str += ": " + version;
+                        }
+                    }
+
+                    // Using CurrentCulture since this is user-facing
+                    ViewModel.LatestAvailableVersion = string.Format(CultureInfo.CurrentCulture, str);
+                }
+                catch (Exception e)
+                {
+                    Logger.LogError("Exception encountered when reading the version.", e);
+                }
+            });
+
+            DataContext = ViewModel;
+        }
+
+        public static int UpdateUIThemeMethod(string themeName)
+        {
+            switch (themeName?.ToUpperInvariant())
+            {
+                case "LIGHT":
+                    ShellPage.ShellHandler.RequestedTheme = ElementTheme.Light;
+                    break;
+                case "DARK":
+                    ShellPage.ShellHandler.RequestedTheme = ElementTheme.Dark;
+                    break;
+                case "SYSTEM":
+                    ShellPage.ShellHandler.RequestedTheme = ElementTheme.Default;
+                    break;
+                default:
+                    Logger.LogError($"Unexpected theme name: {themeName}");
+                    break;
+            }
+
+            return 0;
+        }
+    }
+}