Just a demo using grpc-gateway to provide restful api

compile proto

go mod download

cd proto

protoc    --go_out . --go_opt paths=source_relative --go-grpc_out . --go-grpc_opt paths=source_relative --grpc-gateway_out . --grpc-gateway_opt paths=source_relative  --govalidators_out=. --govalidators_opt paths=source_relative  hello.proto