Step 1. Create Proto file, define messages and services
Step 2. Specify appropriate inject tag comments on top of fields for custom gorm tags
Step 3. Generate pg.go file
Step 4. Inject Gorm Tag to skip xxx fields protoc-go-inject-tag -input=./postgrescrud/postgrescrud.pb.go -XXX_skip=gorm
Step 5. Generate Reverse proxy, pb.gw.go file
Step 6. Success!