CmdPal: Removing Core projects (#45693)

Functionally, no differences.

- Removed Core projects.
- Core.Common => Microsoft.CmdPal.Common
- Core.ViewModels => Microsoft.CmdPal.UI.ViewModels

---------

Co-authored-by: Jiří Polášek <me@jiripolasek.com>

src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/IconInfoViewModel.cs

@@ -0,0 +1,57 @@
+// 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 CommunityToolkit.Mvvm.ComponentModel;
+using Microsoft.CmdPal.UI.ViewModels.Models;
+using Microsoft.CommandPalette.Extensions;
+
+namespace Microsoft.CmdPal.UI.ViewModels;
+
+public partial class IconInfoViewModel : ObservableObject, IIconInfo
+{
+    private readonly ExtensionObject<IIconInfo> _model = new(null);
+
+    // These are properties that are "observable" from the extension object
+    // itself, in the sense that they get raised by PropChanged events from the
+    // extension. However, we don't want to actually make them
+    // [ObservableProperty]s, because PropChanged comes in off the UI thread,
+    // and ObservableProperty is not smart enough to raise the PropertyChanged
+    // on the UI thread.
+    public IconDataViewModel Light { get; private set; }
+
+    public IconDataViewModel Dark { get; private set; }
+
+    public IconDataViewModel IconForTheme(bool light) => Light = light ? Light : Dark;
+
+    public bool HasIcon(bool light) => IconForTheme(light).HasIcon;
+
+    public bool IsSet => _model.Unsafe is not null;
+
+    IIconData? IIconInfo.Dark => Dark;
+
+    IIconData? IIconInfo.Light => Light;
+
+    public IconInfoViewModel(IIconInfo? icon)
+    {
+        _model = new(icon);
+        Light = new(null);
+        Dark = new(null);
+    }
+
+    // Unsafe, needs to be called on BG thread
+    public void InitializeProperties()
+    {
+        var model = _model.Unsafe;
+        if (model is null)
+        {
+            return;
+        }
+
+        Light = new(model.Light);
+        Light.InitializeProperties();
+
+        Dark = new(model.Dark);
+        Dark.InitializeProperties();
+    }
+}