[WRK-1496] Replace Raven with Sentry

[clburns107]

No description provided.

[pond]

Notwithstanding the branch divergence between your code and main in evidence from the diff here, I noted the nature of the feature and it seemed a good idea and easy to add. Since I was rolling v2.1.0 anyway thanks to other PR contributions, I've incorporated a configurable error reporter in #26.

Edit: Available now in v2.1 for Rails 7 and back-ported in v1.3 for Rails 6 (https://rubygems.org/gems/scimitar).