add_description_to_bids_path
====================================================

.. py:function:: petpal.utils.bids_utils.add_description_to_bids_path(filepath: str, description: str) -> str

   Create a copy of a BIDS filepath string with a description entity inserted before the suffix.

   .. note:: If a description 'desc-' entity already exists, it will be overwritten.

   .. seealso:: `Brain Imaging Data Structure (BIDS) <https://bids.neuroimaging.io/>`_

   :param filepath: BIDS-compliant filepath.
   :type filepath: str
   :param description: 'desc' label to add to filename.
   :type description: str

   :returns: string with 'desc' entity added (i.e. 'filename_desc-[description]_pet.nii.gz')