changes on the config.py file and code style

Heya 👋

I was about to add a new feature to aura but then I realized the config file was repeating a lot of the code, and I thought of fixing it first.

I've previously made a pr for fixing code style with flake8 and replacing requirements.txt with pipenv (#3). I've seen the review, and I agree with it for the most part, but there is a possibility that the code can be prettified to look better for anyone reading the code.

I want to add the following things:

• Flake8 - For cleaning up the code and managing type annotations just to make the ide a bit smarter.
• Pipenv - For adding Flake8 as a dev package (we could use requirements-dev.txt, but pipenv makes it easier)

I've already made a lot of changes in the config.py file: https://hasteb.in/xujubexe.py
I will also reformat all of the code to match the flake8 standards.

Does this sound like a good idea?