Add and List Data Providers

[akuny]

Allows users to add data providers by way of poetry run add-provider {provider_name} and list all providers by way of poetry run list-providers.

To run locally in development, create an .env file in the root directory and set it up as such:

DATABASE_URL=sqlite:///nad_ch/infrastructure/database.sqlite3

Once that's set up, you can run poetry run init-db to build a local development database.

Tests run via poetry run test.

[danielnaab]

Looks great! I had some suggestions, but definitely use your own judgment if they all make sense.

[danielnaab]

💯