[Refactor]Port C++/CX to C++/WinRT (#34198)

## Summary of the Pull Request
Removes all C++/CX code, replacing it with C++/WinRT.

## Detailed Description of the Pull Request / Additional comments
Removes all C++/CX code.
Renames interop namespaces to be better consumed by CsWinRT.
Standardizes all projects on net8.0-windows10.0.20348.0, which is a
requirement for C++/WinRT usage.
FileLocksmithLibInterop brought to stdcpplatest and static analysis
errors were corrected.
Removed now unneeded string conversion code from
FileLocksmithLibInterop.
Changed interop KeyboardHook to use a single hook across all instances.
Required because on C++/WinRT we don't have the .NET runtime to bind a
object instance to a delegate and be able to pass it to a C function
pointer argument (still no idea why this worked correctly on C++/CX to
be honest). This change actually makes us create less low level keyboard
hooks.
Changed some code that depended on arrays since WinRT/C++ returns null
instead of an empty array through the interface.

## Validation Steps Performed
Built and tested runtime.

src/settings-ui/Settings.UI/SettingsXAML/App.xaml.cs

@@ -9,7 +9,6 @@ using System.IO;
 using System.Linq;
 using System.Text.Json;
 using System.Threading.Tasks;
-using interop;
 using ManagedCommon;
 using Microsoft.PowerToys.Settings.UI.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library;
@@ -18,6 +17,7 @@ using Microsoft.PowerToys.Settings.UI.Services;
 using Microsoft.PowerToys.Settings.UI.Views;
 using Microsoft.PowerToys.Telemetry;
 using Microsoft.UI.Xaml;
+using PowerToys.Interop;
 using Windows.UI.Popups;
 using WinRT.Interop;
 using WinUIEx;

src/settings-ui/Settings.UI/SettingsXAML/Flyout/AppsListPage.xaml.cs

@@ -5,13 +5,13 @@ using System;
 using System.Collections.ObjectModel;
 using System.Threading;
 using global::Windows.System;
-using interop;
 using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.ViewModels;
 using Microsoft.PowerToys.Settings.UI.Views;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Media.Animation;
+using PowerToys.Interop;
 
 namespace Microsoft.PowerToys.Settings.UI.Flyout
 {

src/settings-ui/Settings.UI/SettingsXAML/Flyout/LaunchPage.xaml.cs

@@ -4,7 +4,6 @@
 using System;
 using System.Threading;
 using global::Windows.System;
-using interop;
 using ManagedCommon;
 using Microsoft.PowerToys.Settings.UI.Controls;
 using Microsoft.PowerToys.Settings.UI.Library;
@@ -14,6 +13,7 @@ using Microsoft.PowerToys.Telemetry;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Media.Animation;
+using PowerToys.Interop;
 using WinUIEx;
 
 namespace Microsoft.PowerToys.Settings.UI.Flyout

src/settings-ui/Settings.UI/SettingsXAML/OOBE/Views/OobeEnvironmentVariables.xaml.cs

@@ -3,13 +3,13 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Threading;
-using interop;
 using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.OOBE.Enums;
 using Microsoft.PowerToys.Settings.UI.OOBE.ViewModel;
 using Microsoft.PowerToys.Settings.UI.Views;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Navigation;
+using PowerToys.Interop;
 
 namespace Microsoft.PowerToys.Settings.UI.OOBE.Views
 {

src/settings-ui/Settings.UI/SettingsXAML/OOBE/Views/OobeHosts.xaml.cs

@@ -3,13 +3,13 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Threading;
-using interop;
 using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.OOBE.Enums;
 using Microsoft.PowerToys.Settings.UI.OOBE.ViewModel;
 using Microsoft.PowerToys.Settings.UI.Views;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Navigation;
+using PowerToys.Interop;
 
 namespace Microsoft.PowerToys.Settings.UI.OOBE.Views
 {

src/settings-ui/Settings.UI/SettingsXAML/OobeWindow.xaml.cs

@@ -3,13 +3,13 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
-using interop;
 using Microsoft.PowerToys.Settings.UI.Helpers;
 using Microsoft.PowerToys.Settings.UI.OOBE.Enums;
 using Microsoft.PowerToys.Settings.UI.OOBE.Views;
 using Microsoft.UI;
 using Microsoft.UI.Windowing;
 using Microsoft.UI.Xaml;
+using PowerToys.Interop;
 using Windows.Graphics;
 using WinUIEx;
 using WinUIEx.Messaging;

src/settings-ui/Settings.UI/ViewModels/EnvironmentVariablesViewModel.cs

@@ -6,11 +6,11 @@ using System;
 using System.Runtime.CompilerServices;
 using System.Threading;
 using global::PowerToys.GPOWrapper;
-using interop;
 using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.Library.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library.Interfaces;
 using Microsoft.PowerToys.Settings.UI.Library.ViewModels.Commands;
+using PowerToys.Interop;
 using Settings.UI.Library.Enumerations;
 
 namespace Microsoft.PowerToys.Settings.UI.ViewModels

src/settings-ui/Settings.UI/ViewModels/HostsViewModel.cs

@@ -6,11 +6,11 @@ using System;
 using System.Runtime.CompilerServices;
 using System.Threading;
 using global::PowerToys.GPOWrapper;
-using interop;
 using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.Library.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library.Interfaces;
 using Microsoft.PowerToys.Settings.UI.Library.ViewModels.Commands;
+using PowerToys.Interop;
 using Settings.UI.Library.Enumerations;
 
 namespace Microsoft.PowerToys.Settings.UI.ViewModels

src/settings-ui/Settings.UI/ViewModels/VideoConferenceViewModel.cs

@@ -5,6 +5,7 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
+using System.Linq;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using System.Text.Json;
@@ -58,8 +59,8 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
 
             Settings = videoConferenceSettingsRepository.SettingsConfig;
 
-            CameraNames = interop.CommonManaged.GetAllVideoCaptureDeviceNames();
-            MicrophoneNames = interop.CommonManaged.GetAllActiveMicrophoneDeviceNames();
+            CameraNames = global::PowerToys.Interop.CommonManaged.GetAllVideoCaptureDeviceNames().ToList();
+            MicrophoneNames = global::PowerToys.Interop.CommonManaged.GetAllActiveMicrophoneDeviceNames().ToList();
             MicrophoneNames.Insert(0, "[All]");
 
             var shouldSaveSettings = false;