* MICROBA-253 add phone number field api for coaching plugin
* Remove hardcoded value
* Requested changes
* Add logger to models_api.py for student
* Import model with underscore to prevent exporting
* Moved return outside of try/catch block
* Add docstring
* whitespace
Creates an API for other apps to be able to create manual enrollment
audit items. Follows the standards set forth in
docs/decisions/0002-inter-app-apis.rst