Fix type annotations, add docstrings, rename unused count variables

[CoolCat467]

This PR makes the following changes:

• Adds a few missing type annotations so mypy can work well
• Aligns method_access_flags by comma
• Adds documentation strings to functions and the module
• Renames unused count variables to _

This is a cool project and I am excited to see how this will develop in the future. Thank you for your time. Stay safe!