Adds code coverage recommendations in GitHub workflow.

[metroid-samus]

Adds the following steps to the Python Lint and Test / test (pull_request) check:

• Coverage per file
  • Evaluates if each *.py file adheres to the suggested minimum code coverage level
• Coverage total
  • Checks whether the overall Python code adheres to the suggested minimum code coverage level

Sample Run: https://github.com/Netflix/dispatch/actions/runs/8182093443/job/22372896340