Schema and Table Authorization

[0814celsus]

Hello,
first of all thank you so much for your work. I am very exited about this new Project. It's really amazing that it is possible to build up a working 🦆lake with s3 encrypted storage and pg catalog within a few hours of time. Amazing! The only feature that I am missing so far is the possibility to manage schema or table access grants to different catalog users. Is this planned in the future? pg piggyback is mentioned in the Documentation but I have not found anything in detail so far.