AutoCLI app wiring + remote info support

[aaronc]

User Stories

• as an module developer, I want a way to specify cosmos.autocli.v1.ModuleOptions that will be picked up by clients
• as a client developer, I want a way to retrieve the autocli options from a remote chain in order to dynamically generate a CLI client

Implementation

• integrate a method into runtime for collecting all of the ModuleOptions as well as custom query and tx commands as OnePerModuleTypes
• add gRPC methods for querying:
  • all of the protobuf FileDescriptors (grpc-reflection sort of has this but it's a bit hard to extract all the FileDescriptors)
  • the autocli ModuleOptions for all the modules
• implement and serve the above gRPC services from runtime