Add collisions to A2 corridors

Start implementation of fading ambient audio in/out on level load

Zennysoft.Game.Ma/src/player/Player.cs

@@ -250,11 +250,6 @@ public partial class Player : CharacterBody3D, IPlayer, IProvide<IPlayer>
       _debugSprint = false;
   }
 
-  public void PlayTestAnimation()
-  {
-    PlayerFXAnimations.Play("test_animation");
-  }
-
   public void OnPhysicsProcess(double delta)
   {
     PlayerLogic.Input(new PlayerLogic.Input.PhysicsTick(delta));