Consistent python style

[DomNomNom]

As mentioned in comments of #26

There are a few things that might be good to have consistent code style for. This issue is for discussing which code style we should have and how we best achieve this.

[DomNomNom]

Some preferences of mine at this point in time:

• Use a linter which can automatically correct style mistakes, not just point them out
• Single quotes
• f-strings
• pathlib.Path rather than strings for describing paths.
• Four space indentation.
• Discouraging import *

[amsam0]

One option is Black. I'm not sure how the options work, but a batch file could be created for this.

[DomNomNom]

Also, doing it as a pre-commit hook or something might be useful, so we avoid situations of people accidentally not running it.

[amsam0]

Not a pro on that, but good idea.

[azeemba]

Are we still interested in this? I have a GitHub action config that can apply black formatting and commit/push it out after any changes land on master.

This is a commit the action pushed out: azeemba@8163214
Here is the configuration: action-test/.github/workflows/main.yml
Here are the logs: https://github.com/azeemba/RLBotGUI/runs/828744657?check_suite_focus=true

We could expand it to also do prettier for the JS code.