Add CLI command for adding a new API key mid-run

New API keys can be added into the DB manually, but these only get picked up and fed to keyman on startup

I think we need a CLI command that will:
- interactively prompt for the various details of the api key (domain for upcoming platform support, the key, the API type etc)
- Give this key to keyman to add to the pool
- optionally, store the key in the DB for the user so they can use it next time

This would allow instances that are stuck on API key bottlenecks to quickly add more keys and finish collecting faster