Automated style checks via commit hooks

[imagejan]

It would be awesome to have automated style checks (in commit hooks? via GitHub actions on pull requests?) that prevent contributors from committing files that don't adhere to the web-lower-case style, and possibly other style conventions for this site.

[mattxwang]

This is definitely doable via actions and could be part of #150 - depending on the type of style you mean, we could do this with HTMLProofer, Stylelint, etc.!