Lib-detect-testenv

---------
2023-07-14:
- remove dependency click
- remove dependency cli_exit_tools to avoid circular dependency

---------
2023-07-14:
- add codeql badge
- move 3rd_party_stubs outside the src directory
- add pypy 3.10 tests
- add python 3.12-dev tests

---------
2023-07-13:
- require minimum python 3.8
- remove python 3.7 tests

---------
2023-07-11:
- introduce PEP517 packaging standard
- introduce pyproject.toml build-system
- remove mypy.ini
- remove pytest.ini
- remove setup.cfg
- remove setup.py
- remove .bettercodehub.yml
- remove .travis.yml
- update black config
- clean ./tests/test_cli.py

---------
2023-06-26: suppress upload of .egg files to pypi.org

---------
2023-01-13:
- update github actions : checkoutv3 and setup-pythonv4
- remove "better code" badges
- remove python 3.6 tests
- add python 3.11 tests
- update to pypy 3.9 tests