- Add new configuration so we can inject extra filters to our databases when running the DatabaseFilter in base_filters
- Add tests for our new config and its usage

- Add explicit assertions to validate the filter is not called when not defined
- Use docstring comment

- Generalize the new config so we can use it for other entities down the road.
- Pull the new database key from the config so we apply any given filter method in the databases API
- Adjust our tests with the new config name and structure

- Add more info to our comments in our tests