[Feature] Leo Error Index

[collinc97]

🚀 Feature

Create an index of all Leo errors that includes the error number, type, message, and recommended fix.

Motivation

There is currently no way to browse, add, and remove errors in the leo-errors module.

Implementation

• [ ] Add all error numbers to the index
• [ ] Add all error types to the index
• [ ] Add all error messages to the index
• [ ] Add all recommended fixes to the index