如何创建＆＃39;字符串类型＆＃39;在编译时检查文件是否存在于某个路径上？ e.g）
val spaceshipModelPath: ResourceFilePath(from="appRoot/assets") = "appRoot/assets/spaceshipModel.obj"
或：
type ObjResourcePathType = ResourceFilePath["appRoot/assets", ".obj"]
val spaceshipModelPath: ObjResourcePathType = ...