move key_helper to utils directory

scripts/game_key.gd

@@ -326,13 +326,8 @@ func _reset_animations() -> void:
 
 func _animate(delta: float) -> void:
 	position = _pos_sod.process(delta, _animate_position())
-	rotation = lerp(rotation, _default_rot, delta * _rotation_damping)
 
-
-func _animate_position() -> Vector3:
-	var new_position := _default_pos
-
-	new_position.y += (
+	position.y += (
 		sin(
 			(
 				_keyboard.anim_time
@@ -344,6 +339,12 @@ func _animate_position() -> Vector3:
 		* _keyboard.key_size
 	)
 
+	rotation = lerp(rotation, _default_rot, delta * _rotation_damping)
+
+
+func _animate_position() -> Vector3:
+	var new_position := _default_pos
+
 	new_position.y -= (_press_offset * _keyboard.key_size) if _is_pressed else 0.0
 
 	return new_position