Added a GitHub action to check the performance of PRs relative to main

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 92.35%. Comparing base (9355c38) to head (3ac65bf).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #543 +/- ## ======================================= Coverage 92.35% 92.35% ======================================= Files 60 60 Lines 4500 4500 ======================================= Hits 4156 4156 Misses 344 344 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[nwlandry]

This PR is stale - closing in favor of #556