Do we need a import plasmapy GitHub Action check?

[rocco8773]

I'm a little puzzled how all the checks for PR #1444 passed when an ImportError was raised when importing plasmapy.formulary.parameters (see PR #1446). I'm thinking we should add to our CI checks a check on importing plasmapy to ensure it imports without error.

@namurphy @StanczakDominik Thoughts?

[namurphy]

I like it. Given my history of directly inspiring the Astropy 4.3.1 bugfix release due to accidentally deleting the astropy.units.imperial import in __init__.py, I'd say this check (and perhaps even checks that our subpackages are in the top-level namespace) would be worth having. With that said, I've probably learned my lesson. Probably.

[namurphy]

I'm wondering if there's a pytest extension for this, and an existing GitHub Action...

[namurphy]

Closed by #1501.