write_dict_to_json
========================================

.. py:function:: petpal.utils.image_io.write_dict_to_json(meta_data_dict: dict, out_path: str)

   Save a metadata file in python to a directory.

   :param meta_data_dict: A dictionary with imaging metadata, to be saved to file.
   :type meta_data_dict: dict
   :param out_path: Directory to which `meta_file` is to be saved.
   :type out_path: str