PROPER ERRORS

Errors are the one thing that I knew were terrible but I could never build up the courage to fix.
So I just fixed them.

Now all errors in the language are formatted nicely, show you exactly where the error happened and give you a nice description.

Along with this, I made a new system for collecting errors, so now the compiler won’t stop at the first error and will continue going and give you all errors at once. This makes fixing code a lot easier.

This also opens up the possibility of an LSP server later on
(before and after in images)