feat: initialize icon button.

demo/Ursa.Demo/ViewModels/IconButtonDemoViewModel.cs

@@ -0,0 +1,8 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace Ursa.Demo.ViewModels;
+
+public class IconButtonDemoViewModel: ObservableObject
+{
+    
+}

demo/Ursa.Demo/ViewModels/MainViewViewModel.cs

@@ -31,6 +31,7 @@ public class MainViewViewModel : ViewModelBase
             MenuKeys.MenuKeyDivider => new DividerDemoViewModel(),
             MenuKeys.MenuKeyDualBadge => new DualBadgeDemoViewModel(),
             MenuKeys.MenuKeyImageViewer => new ImageViewerDemoViewModel(),
+            MenuKeys.MenuKeyIconButton => new IconButtonDemoViewModel(),
             MenuKeys.MenuKeyIpBox => new IPv4BoxDemoViewModel(),
             MenuKeys.MenuKeyKeyGestureInput => new KeyGestureInputDemoViewModel(),
             MenuKeys.MenuKeyLoading => new LoadingDemoViewModel(),

demo/Ursa.Demo/ViewModels/MenuViewModel.cs

@@ -17,6 +17,7 @@ public class MenuViewModel: ViewModelBase
             new() { MenuHeader = "ButtonGroup", Key = MenuKeys.MenuKeyButtonGroup },
             new() { MenuHeader = "Divider", Key = MenuKeys.MenuKeyDivider },
             new() { MenuHeader = "DualBadge", Key = MenuKeys.MenuKeyDualBadge },
+            new() { MenuHeader = "IconButton", Key = MenuKeys.MenuKeyIconButton },
             new() { MenuHeader = "ImageViewer", Key = MenuKeys.MenuKeyImageViewer },
             new() { MenuHeader = "IPv4Box", Key = MenuKeys.MenuKeyIpBox },
             new() { MenuHeader = "KeyGestureInput", Key = MenuKeys.MenuKeyKeyGestureInput },