Add audio effect and implement FireScan bullet behavior

- Added Rip.wav audio effect to the project.
- Created FireScan bullet script with speed and damage properties.
- Implemented basic AI movement for FireScan bullets.
- Introduced Wave class for managing enemy waves with dynamic counts and spawning logic.

scripts/Statemachine/BulletBase.gd

@@ -58,5 +58,5 @@ static func generate(
 	instance.position = spawnPosition
 	instance.rotation = spawnRotation
 	if addToWorld:
-		WorldTool.rootNode.add_child(instance)
+		WorldManager.rootNode.add_child(instance)
 	return instance