feat: implement arrangement and dragging

demo/Ursa.Demo/ViewModels/MainViewViewModel.cs

@@ -39,6 +39,7 @@ public class MainViewViewModel : ViewModelBase
             MenuKeys.MenuKeyNavigation => new NavigationMenuDemoViewModel(),
             MenuKeys.MenuKeyNumericUpDown => new NumericUpDownDemoViewModel(),
             MenuKeys.MenuKeyPagination => new PaginationDemoViewModel(),
+            MenuKeys.MenuKeyRangeSlider => new RangeSliderDemoViewModel(),
             MenuKeys.MenuKeyTagInput => new TagInputDemoViewModel(),
             MenuKeys.MenuKeyTimeline => new TimelineDemoViewModel(),
         };

demo/Ursa.Demo/ViewModels/MenuViewModel.cs

@@ -26,6 +26,7 @@ public class MenuViewModel: ViewModelBase
             new() { MenuHeader = "Navigation", Key = MenuKeys.MenuKeyNavigation },
             new() { MenuHeader = "NumericUpDown", Key = MenuKeys.MenuKeyNumericUpDown },
             new() { MenuHeader = "Pagination", Key = MenuKeys.MenuKeyPagination },
+            new() { MenuHeader = "RangeSlider", Key = MenuKeys.MenuKeyRangeSlider },
             new() { MenuHeader = "TagInput", Key = MenuKeys.MenuKeyTagInput },
             new() { MenuHeader = "Timeline", Key = MenuKeys.MenuKeyTimeline },
         };

demo/Ursa.Demo/ViewModels/RangeSliderDemoViewModel.cs

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