reuse libraries during build. add pre-commit and ruff.

[FoamyGuy]

The two main changes this introduces are:

• Use pre-commit and ruff to make this match the libraries and other repos that use those tools. This introduced many whitespace and basic formatting changes. Also added a few of the other boilerplate repo files like code of conduct.
• During the buid for different languages store and reuse the downloaded library files for each subsequent language instead of installing them every time with circup_cli. This dramatically reduces how long the complete build takes to complete. Resolves Refactor build.py to avoid uneccessary repitition #51