feat: Swapped from using Dockerfile to composite steps.

[WildCard65]

Note: This requires using "actions/setup-python' in order to find 'yapf' script.

I also added a debugging echo to test variable arguments input.

[AlexanderMelde]

I will merge it in a few days, i will research if there is a way to prevent having to add "actions/setup-python" to the workflow, as this is a breaking change for existing users who are using the master branch instead of a pinned version number