Implement typos spell-checker into PUDL code and documentation

[e-belfer]

Is your feature request related to a problem? Please describe.
Our codebase is full of little typos that we catch and correct in an ad-hoc way (see, e.g., #3754).

Describe the solution you'd like
We implement a spell-checker into our pre-commit hooks. typos seems to be a fast, actively-maintained spell-checker that integrates with pre-commit and Github actions.

Implementing this will almost certainly require one large PR to fix existing changes and populate an exceptions list (e.g., PUDL will certainly fail the spellchecker).

Describe alternatives you've considered
We do a manual read-through of all our code for errors, or integrate spell checkers into our personal IDEs. Both of these approaches are ad-hoc and require ongoing implementation effort, which we are unlikely to do.