Documentation

# What needs to be done?

- Make documentation for all files (Important ones not actually all) such that anyone new can understand what's going on
- Documentation should be concise and technical to an extent (Shouldn't explain every small thing but don't be too simple)
- Make an `Overview.md` with simple description of each file and folder

## Additional Things

If possible don't make typos 👽
There is already a `docs/` folder, put things not suitable for comments in files over there (Like about schema) as well as clean up other files in `docs/` folder