New creates a new RPC service.

Config provides the configuration for the RPC service.

ConfigOutput is the config that clients will need to connect to the gRPC server.

RPCService implements the gRPC interface and starts the gRPC server.

WrappedServerStream wraps a ServerSteam so that we can pass values through context.

IProxy enables mocking a proxy object in tests.

ITailer enables mocking a tailer object in tests.