How about adding support for OpenRPC?

Hi, guys!

Recently I did a wrapper around JSONRPC to generate OpenRPC spec and CL client for a service described by a spec: https://40ants.com/openrpc/

Don't know if OpenRPC is applicable to gRPC, but in case if you wanna add support, I'll be happy to extend my system and support gRPC besides JSON-RPC.