Update CI

[cthoyt]

Summary

This PR refactors the CI code into three separate workflows for code QA, documentation, and testing.

• [x] Code passes all tests
• [x] Unit tests provided for these changes
• [x] Documentation and docstrings added for these changes

Changes

• Split existing CI pipeline
• Add pyroma metadata check
• Add manifest check
• Add missing author email to metadata to pass pyroma
• Add declarative setup.cfg for more easy package metadata listing (can switch completely later)

[codecov-commenter]

Codecov Report

Merging #44 (c5d82cd) into main (53ca94b) will not change coverage. The diff coverage is n/a.

:exclamation: Current head c5d82cd differs from pull request most recent head 6bdb463. Consider uploading reports for the commit 6bdb463 to get more accurate results

@@           Coverage Diff           @@
##             main      #44   +/-   ##
=======================================
  Coverage   98.65%   98.65%           
=======================================
  Files          28       28           
  Lines         671      671           
=======================================
  Hits          662      662           
  Misses          9        9           

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[benedekrozemberczki]

This pyroma package looks interesting - does it check for code smells?

[cthoyt]

Nope, pyroma only checks for minimum packaging metadata (author name, author email, python version, license, etc.)