Introducing black formatting for python code

[sammuti]

• Introduce black pre-commit hook
• Format existing code

[socksy]

lookin good! I know it's in draft but already an improvement. If you add a --check command to one of the github workflows (maybe .github/workflows/test-python.yml?) and a line in the README for how to run it, that'd be grand

[sammuti]

@socksy here I also added a git precommit hook so it will run automatically when you commit.

[sammuti]

mistake, I need to make a change so that it will be available to you locally

[sammuti]

@socksy now PRs will also check formatting

I also added instructions on installing the pre-commit hook, so it would be less hassle for everyone to use

[bradhe]

LGTM