refactor(eslint-plugin-react-hooks): move rules to `rules` folder (#32411)

Since the compiler plugin is going to be merged into the hooks plugin,
and ultimately decomposed into several more rules, it would be good to
start creating a more traditional folder structure for the plugin. This
change just moves the rules into a `rules` folder.

Co-authored-by: lauren <poteto@users.noreply.github.com>