Volume Hotkeys (#3500)

* Initial GTK implementation

* Less messy and Avalonia imp

* Move clamping to HLE and streamline imps

* Make viewmodel update consistent

* Fix rebase and add an english locale.

Co-authored-by: Mary-nyan <mary@mary.zone>

Ryujinx.HLE/Switch.cs

@@ -124,7 +124,7 @@ namespace Ryujinx.HLE
 
         public void SetVolume(float volume)
         {
-            System.SetVolume(volume);
+            System.SetVolume(Math.Clamp(volume, 0, 1));
         }
 
         public float GetVolume()