Merge pull request CommunityToolkit#275 from Avid29/marquee

 [Feature] Marquee Text Control

Author: Arlodotexe

GlobalUsings_WinUI.cs

@@ -26,6 +26,7 @@
 global using Windows.UI.Xaml.Input;
 global using Windows.UI.Xaml.Markup;
 global using Windows.UI.Xaml.Media;
+global using Windows.UI.Xaml.Media.Animation;
 global using Windows.UI.Xaml.Navigation;
 
 #else
@@ -40,6 +41,7 @@
 global using Microsoft.UI.Xaml.Input;
 global using Microsoft.UI.Xaml.Markup;
 global using Microsoft.UI.Xaml.Media;
+global using Microsoft.UI.Xaml.Media.Animation;
 global using Microsoft.UI.Xaml.Navigation;
 #endif