Omnibus enhancements

[arichtman]

This is a large request so I'm happy to explain everything and adjust as we like.

• Expose API feature to lint against a specific git ref
• Add domain input validation
• Automatically gather arguments from GitLab CI environment
• Move from deprecated setup.py
• Added debug logging
• Adjust arguments so that short form flags don't clash
• Change environment variable prefix to be shorter and managed by Click
• Add --version option
• Use commitizen to manage package versioning
• Add pre-commit hooks for a variety of checks
• Update README docs
• Use common .gitignore template

[elijah-roberts]

Looks good... only sticking point will be the app version.. the latest I have deployed to pypi is 0.4.0.

What are your thoughts on releasing this changes as 1.0.0?

@arichtman

[elijah-roberts]

I will also need to update my CI pipline to build based on poetry but that should be easy enough

[arichtman]

I would have liked to add some better tests before committing to an interface but I'm also fine with v1.0.0
After merge please run cz bump --increment MAJOR and then git push all, that will adjust the version to v1.0.0 and add Git tags. @elijah-roberts

[arichtman]

I'm unsure if the ping reached you @elijah-roberts , please disregard if already notified.

[arichtman]

@elijah-roberts Is this still good to merge?