Onion Service v3 connection status update event
Tor control protocol should allow user to subscribe to event(s) that let user know about timing/success/failure/error conditions of every step described in chapter 3 and 4 of rend-spec-v3.txt.
We need to do some design work to figure out how exactly this should work and what exact info should be transmitted to controller.
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information