OrioleDB maintains a very small set of Postgres patches that are targeted for upstream. The storage engine that mitigates the need for vacuuming [1] is implemented in a standard Postgres extension, so that will still need to be installed by the Postgres host in order to take advantage of it.
But yeah, looking forward to that day too!
[1] https://www.orioledb.com/blog/no-more-vacuum-in-postgresql