Refactor config loading system to use django-environ, python-decouple, dynaconf, or pydantic #693
Description
We should move away from my old hand-coded config loading system to a library that can handle it for us:
- https://github.com/henriquebastos/python-decouple/ (most features, supports ini, .env, environment variables, and python)
- https://github.com/joke2k/django-environ (simplest option, supports .env, environment variables, and python)
- https://pydantic-docs.helpmanual.io/usage/settings/ (uses the python type hinting system)
- https://github.com/rochacbruno/dynaconf (inspired by 12-factor, similar to django-environ)
these are my favorite configuration/settings management libraries for python