RFC-214: Transparent encryption and decryption for all tables that contain secrets or tokens

Created by: unknwon

This is a placeholder issue for tracking implementing transparent encryption and decryption for all tables.

TODO:

secrets: add scanners for transparent encryption and decryption #14191
Package rename #14213
~~DB migration~~ (@unknwon: Not worth it because extra ephemeral changes need to be made just for DB migration to work)
Transparent encryption and decryption for all tables that contain secrets or tokens #14214