list_doc_folders
List the user's folders in Files: Personal (private), Shared (everyone in the business; put team files here), Recently emailed (files they've emailed, kept 30 days), Trash (files they deleted; removed for good after 10 days, restorable until then with restore_doc_file), and the folders older notebooks still have (named after the notebook, plus subfolders). Returns id, name, kind, parent_id, notebook_id, file_count.
Parameters
None.