Add support for pg_create_logical_replication_slot
I get the error
logical decoding requires wal_level >= logical when I try to use it. My usecase is effectively building a platform to stream changes to frontend frameworks without much effort. I can alternatively use triggers, but having a connection there slurping changes might be more efficient in cases where it is a common set of tables being affected. I am trying to use it with the wal2json extension.
