Rate limit all endpoints by default via middleware

[PSalant726]

Closes #57

API Changes

• Rate limit all endpoints by default via the SlowAPIMiddleware
  • Bumps the rate limit to 20/minute, as it's anticipated that 6/minute will be exceeded by legitimate use in the near term.
  • The affected endpoints have not changed. This change should be completely transparent to legitimate API consumers.
  • In the future, if an endpoint should be excluded from rate limiting, the limiter object can be restored and the @limiter.exempt decorator can be used. See: https://slowapi.readthedocs.io/en/latest/examples/#exempt-a-route-from-the-global-limit

[SteveDMurphy]

Nice change @PSalant726 🙌🏽

The only question I have is around the 6/minute limit and thinking that we may exceed that occasionally (or eventually) with some of the chained events that can get sent 🤔 might be more to do with the api stuff we dabbled with that I am drawing on

[PSalant726]

The intent was to provide a generous limit, just to block obvious spam. I bumped it to 20/minute 🤷‍♂️

[SteveDMurphy]

Thanks! Ya I think I remember getting sometimes 10+ events for a single command so 20 should be more than enough 👍🏽