User data mirroring from auth to profile table could use more detailed examples in the docs

An example of a system I have put together:

This mirrors selected information from raw_user_meta_data to a public.profile table, and vice versa.

This is a fairly common use case and a explicitly endorsed pattern for doing this bidirectional syncing would be very helpful. There have been multiple questions in the discord in recent days from people having problems with this sort of setup.