fromPath method
filePath - path of the file to be loaded
Implementation
@override
Future<ThreeFile?> fromPath(String filePath) async{
  try{
    final File file = File(path+filePath);
    final Uint8List data = await file.readAsBytes();
    return await fromBytes(data,'path',filePath);
  }catch(e){
    console.error('FileLoader error from path: ${path.substring(0,30)}');
    return null;
  }
}