Move Play Scene window menu entry to Tools/Play Scene

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Assets/Scripts/Editor/PlaySceneWindow.cs

@@ -13,7 +13,7 @@ namespace Chameleon.Editor
     [ExecuteAlways]
     public class PlaySceneWindow : EditorWindow
     {
-        [MenuItem("Tools/Chameleon/Play Scene")]
+        [MenuItem("Tools/Play Scene")]
         public static void Open()
             => _ = GetWindow<PlaySceneWindow>("Play Scene");