Is your feature request related to a problem? Please describe.
I’ve been using services that started using HTTP, and I’ve realised it doesn’t support job scheduling. I need to switch to using the gRPC SDK, but now my services, which mainly talk to ConnectRPC, need to listen on an additional port.

Describe the solution you'd like
A ConnectRPC server can natively serve gRPC traffic and reuse HTTP router mix, so having a third common.Service implementation offers the best of both worlds.

Describe alternatives you've considered
Starting Dapr server on additional port.

Additional context
I’ve created a very rough draft in #785. I’ve mainly just taken the gRPC implementation and replaced it with imports for ConnectRPC. I haven’t yet taken in the goodness of the HTTP implementation.