docs: def get_module_subdir_list(module_fpath):
      """
      get_module_subdir_list
  
      Args:
          module_fpath (str):
  
      Example:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_path import *  # NOQA
          >>> import utool as ut
          >>> module_fpath = ut.util_path.__file__
          >>> modsubdir_list = get_module_subdir_list(module_fpath)
          >>> result = modsubdir_list
          >>> print(result)
          ['utool', 'util_path']
      """
      module_fpath = truepath(module_fpath)
      dpath, fname_ext = split(module_fpath)
      fname, ext = splitext(fname_ext)
      full_dpath = dpath
      dpath = full_dpath
      _modsubdir_list = [fname]
      while is_module_dir(dpath):
          dpath, dname = split(dpath)
          _modsubdir_list.append(dname)
      modsubdir_list = _modsubdir_list[::-1]
      return modsubdir_list