Add simple dgpu worker connection test
Make db connection handler manage schema and table init logic
Keep tweaking dgpu main handler attemtping to fix subactor hangs
Change frontend open rpc logic to return a wrapped rpc_call fn referencing the new socket
Decupled user config request validation from telegram module
Fix next_worker logic, now takes in account multiple tasks per dgpu
Add dgpu_workers and dgpu_next calls
Fixed readme, moved db init code into db module