Fixed HUD and menu position and scaling in hardware renderer

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

packages/wolf_3d_dart/lib/src/engine/wolf_3d_engine_base.dart

@@ -80,6 +80,9 @@ class WolfEngine {
   /// Current smoothed FPS, suitable for lightweight on-screen diagnostics.
   double get fps => _smoothedFps;
 
+  /// Whether renderers should draw the FPS counter overlay.
+  bool showFpsCounter = true;
+
   /// The episode index where the game session begins.
   final int? startingEpisode;