Avalonia - Use content dialog for user profile manager (#3455)

* remove content dialog placeholder from all windows

* remove redundant window argument

* redesign user profile window

* wip

* use avalonia auto name generator

* add edit and new user options

* move profile image selection to content dialog

* remove usings

* fix updater

* address review

* adjust avatar dialog size

* add validation for user editor

* fix typo

* Shorten some labels

Ryujinx.Ava/Ui/Windows/CheatWindow.axaml.cs

@@ -12,7 +12,7 @@ using System.Linq;
 
 namespace Ryujinx.Ava.Ui.Windows
 {
-    public class CheatWindow : StyleableWindow
+    public partial class CheatWindow : StyleableWindow
     {
         private readonly string _enabledCheatsPath;
         public bool NoCheatsFound { get; }
@@ -102,11 +102,6 @@ namespace Ryujinx.Ava.Ui.Windows
             this.AttachDevTools();
         }
 
-        private void InitializeComponent()
-        {
-            AvaloniaXamlLoader.Load(this);
-        }
-
         public void Save()
         {
             if (NoCheatsFound)