cmd/protoc-gen-micro: add go.mod declaring go-micro.dev/v5/cmd/protoc-gen-micro

Author: asim

cmd/protoc-gen-micro/go.mod

@@ -0,0 +1,11 @@
+module go-micro.dev/v5/cmd/protoc-gen-micro
+
+go 1.24
+
+require (
+    google.golang.org/protobuf v1.36.6
+)
+
+// Use the root module for other dependencies during development. Keep this file
+// minimal to ensure `go install go-micro.dev/v5/cmd/protoc-gen-micro@latest`
+// resolves to the correct module path for future v5 tagged releases.