Add a basic `Flask` API that responds to queries for copyright data. This includes 5 basic endpoints:
- `/search/fulltext`: queries all text fields in the Registration and Renewal records
- `/search/registration/<regnum>`: queries the collection for a specific copyright registration by registration number
- `/search/renewal/<rennum>`: queries the collection for a specific copyright renewal by renewal number
- `/registration/<uuid>`: fetches a single registration record by internally assigned UUID
- `/registration/<uuid?`: fetches a single renewal record by internally assigned UUID
The api can be run with the standard `python -m flask run` from the root of the project and by default will run in `production` mode. To set `development` run `export FLASK_ENV=development` before starting the application.