enable codecoverage checks

[orbeckst]

We need to know which code the tests cover. We need to add/enable code coverage. https://about.codecov.io/

[ljwoods2]

This should be on already

https://app.codecov.io/gh/becksteinlab/imdclient

[orbeckst]

But there's no check on PR #54 at the moment.

[orbeckst]

It looks as if there exist upload issues

[2025-04-09T19:53:17.047Z] ['error'] There was an error running the uploader: Error uploading to [https://codecov.io:](https://codecov.io/) Error: There was an error fetching the storage URL during POST: 429 - {"message":"Rate limit reached. Please upload with the Codecov repository upload token to resolve issue. Expected time to availability: 1102s."}

[2025-04-09T19:53:17.047Z] ['verbose'] The error stack is: Error: Error uploading to [https://codecov.io:](https://codecov.io/) Error: There was an error fetching the storage URL during POST: 429 - {"message":"Rate limit reached. Please upload with the Codecov repository upload token to resolve issue. Expected time to availability: 1102s."}

Should try it with token.

[orbeckst]

Adding the token in PR #60 seems to be doing the job.

I also enabled branch protection for main with required checks.