Improve rubocop in JH

Currently JH code break rubocop rules because rubocop config forget JH folder. In JH codebase, we have so many disable rubocop, we should introduce JH rubocop rules, then we will never need add disable rubocop

upstream MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/81220

related video: https://drive.google.com/file/d/1U6Txa0ygKRiWtZE44QBFufDvKqF94EdQ/view?usp=sharing