Adds a feature flagged exposed tables config to postgrest settings:
<img width="1158" height="589" alt="Screenshot 2026-03-02 at 17 04 13"
src="https://github.com/user-attachments/assets/8fa8ab81-0bfa-4781-83bc-80ac52e180f8"
/>
To test:
- make sure the existing (feature flag off) settings work as expected
- make sure exposing and removing schemas works in the new mode
- make sure exposing and removing tables works in the new mode
- ideally try with a lot of tables to check search and infinite scroll
work as expected
- try exposing a schema without any tables (like `graphql_public`) and
make sure it doesn't get removed randomly when editing tables
- try with a table with custom permissions (for example `REVOKE SELECT
ON public.posts FROM anon;`) and make sure the user is informed with the
tooltip
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Co-authored-by: Nick Babadzhanian <33933459+pgnickb@users.noreply.github.com>
