Last life cycle refactor updates + add comprehensive documentation (#57)

Co-authored-by: Michal Pikulski <michal.a.pikulski@gmail.com>
Reviewed-on: #57

Assets/Scripts/UI/AppSwitcher.cs

@@ -93,10 +93,8 @@ public class AppSwitcher : UIPage
         );
     }
     
-    protected override void OnDestroy()
+    internal override void OnManagedDestroy()
     {
-        base.OnDestroy();
-        
         // Clean up tweens
         slideInTween?.Stop();
         slideOutTween?.Stop();