ci: static code analysis

[AngryMaciek]

I would suggest to introduce a CI workflow which could run a static code analysis for python scripts; flake8 is a popular linter for python. That way you would ensure that the code inside the repository complies with the community standards. You can find an example here. If you are overzealous like I am you may also use black formatter and introduce CI checks for it too (just like in the exapmle above) but that is not necessary. Remember that the behaviour of both tools you can customize to your liking with configfiles.

Such a CI workflow should, of course, contribute a nice shield to the README file. Black has its own shield too.