Add pg_repack extension instead of inbuilt VACCUM

[Karan Sakhuja]

Feature request

In production databases, you don’t want to use the VACUUM FULL operation because it blocks other activities in the database. Another alternative when you want the storage reclaimed rather than just be available for reuse is using the pg_repack extension.

It's also available with RDS and Aurora PostgreSQL that cleans up dead tuples.
https://aws.amazon.com/blogs/database/remove-bloat-from-amazon-aurora-and-rds-for-postgresql-with-pg_repack/

[Marshall Polaris]

This extension is also valuable because it provides a way to CLUSTER without locks.

[Pavel Borisov]

I think it's safe enough and worth adding. PR: #492

[Paul Cioanca]

Hello everybody,

This has rolled out to the Supabase platform today, available for newly created projects, or ones which are paused and then unpaused (to get re-provisioned using the updated server image).