This tool gen grpc api configuration from proto
reference for this document https://grpc-ecosystem.github.io/grpc-gateway/docs/grpcapiconfiguration.html
Usage:
go get -u github.com/buicongtan1997/protoc-gen-swagger-config
go install github.com/buicongtan1997/protoc-gen-swagger-config
protoc-gen-swagger-config --help