Add bare-bones GHA tests

[ewu63]

Purpose

Adds some basic GHA tests, because we do not currently test optional optimizer installation in our docker tests and I want to make sure nothing breaks with 1) optional installation/dependency not breaking, and 2) tests get skipped properly. We should merge this one before #433 to make sure everything looks good with mesonpy.

Expected time until merged

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

Testing

Checklist

• I have run flake8 and black to make sure the Python code adheres to PEP-8 and is consistently formatted
• I have formatted the Fortran code with fprettify or C/C++ code with clang-format as applicable
• I have run unit and regression tests which pass locally with my changes
• I have added new tests that prove my fix is effective or that my feature works
• I have added necessary documentation

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.02%. Comparing base (e3b9417) to head (95ef419).
Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #434   +/-   ##
=======================================
  Coverage   75.02%   75.02%           
=======================================
  Files          22       22           
  Lines        3331     3331           
=======================================
  Hits         2499     2499           
  Misses        832      832           

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[ewu63]

PR is ready, but we should probably consider adding cyipopt to the deps layer of the Docker containers, beside IPOPT. CC @eirikurj

[eirikurj]

@ewu63 yes I think we should install cyipopt on the docker images.

[eirikurj]

PR for the containers is up https://github.com/mdolab/docker/pull/281.

[ewu63]

We can wait for Docker to be updated first, then remove the cyipopt change.