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

src/Ryujinx/UI/Views/User/UserFirmwareAvatarSelectorView.axaml.cs

@@ -1,4 +1,3 @@
-using Avalonia.Controls;
 using Avalonia.Interactivity;
 using FluentAvalonia.UI.Controls;
 using FluentAvalonia.UI.Navigation;
@@ -11,7 +10,7 @@ using System.IO;
 
 namespace Ryujinx.Ava.UI.Views.User
 {
-    public partial class UserFirmwareAvatarSelectorView : UserControl
+    public partial class UserFirmwareAvatarSelectorView : RyujinxControl<UserFirmwareAvatarSelectorViewModel>
     {
         private NavigationDialogHost _parent;
         private TempProfile _profile;
@@ -20,8 +19,6 @@ namespace Ryujinx.Ava.UI.Views.User
         {
             ContentManager = contentManager;
 
-            DataContext = ViewModel;
-
             InitializeComponent();
         }
 
@@ -55,8 +52,6 @@ namespace Ryujinx.Ava.UI.Views.User
 
         public ContentManager ContentManager { get; private set; }
 
-        internal UserFirmwareAvatarSelectorViewModel ViewModel { get; set; }
-
         private void GoBack(object sender, RoutedEventArgs e)
         {
             _parent.GoBack();