support to execute jun tasks using protocol buffers

A rebar3 gpb plugin for compiling .proto files

A rebar3 gpb rpc plugin for compiling .proto files

Rebar3 plugin to generate client for eetcd

exprotobuf provides native encoding/decoding of protobuf messages via generated modules/structs.

Erlang grpc library based on chatterbox

Rebar3 plugin to generate behaviours for grpc services

Shared functions for grpc and grpc_client

A rebar plugin