misc: Created generic type RyujinxControl to allow for more unified control view model definitions

src/Ryujinx/UI/Controls/ApplicationContextMenu.axaml.cs

@@ -26,6 +26,7 @@ namespace Ryujinx.Ava.UI.Controls
 {
     public class ApplicationContextMenu : MenuFlyout
     {
+        
         public ApplicationContextMenu()
         {
             InitializeComponent();