gRPC-based architecture#1

Draft

renbou wants to merge 17 commits intomainfrom

Commits on Jul 26, 2022

wip: migrate to http proxy architecture
renbou
committed

Commits on Jul 27, 2022

wip: grpc-based registrar implemented
renbou
committed

Commits on Jul 29, 2022

huge refactor
renbou
committed

Commits on Aug 1, 2022

Commits on Aug 2, 2022

refactor: don't use jsoniter, disable parallelized computation order synchronizaztion
renbou
committed
fix: streamer should close/drain channel when context is done
renbou
committed