Updated backend development guidelines

docs/3_guidelines/development-guidelines.md

@@ -995,6 +995,18 @@ golangci-lint run
 # Format Go code  
 go fmt ./...
 goimports -w .
+
+# Update go.mod of all services
+find . -type f -name "*.mod" -printf "%h\0" | sort -zu | xargs -0 -I{} sh -c 'cd "{}" && go mod tidy'
+
+# Run all backend tests
+go test  $(go list -f '{{.Dir}}/...' -m | xargs)
+
+# Go vet all backend code
+go vet  $(go list -f '{{.Dir}}/...' -m | xargs)
+
+# Lint all backend code
+golangci-lint run  $(go list -f '{{.Dir}}/...' -m | xargs)
 ```
 
 ### Development Environment