[Features] Support Supabase postgresql

[majian159]

What is the user interaction of your feature
use supabase self hosting

Additional context
Add any other context or screenshots about the feature request here.
https://github.com/supabase/postgres

[shanshanying]

Hi @majian159

Just found this PG is 'Unmodified Postgres with some useful plugins. Our goal with this repo is not to modify Postgres, but to provide some of the most common extensions with a one-click install.'

KubeBlocks can supoort this engine with few changes.
@kizuna-lek could pls help on this issue, based on impl of our official-postgres addon.