Implement real, working microservices architecture

backend/services/messaging/main.py

@@ -0,0 +1,9 @@
+from fastapi import FastAPI
+from backend.routes.messaging import router as messaging_router
+
+if __name__ == "__main__":
+    app = FastAPI(title="Messaging Service")
+    app.include_router(messaging_router, prefix="/messaging")
+
+    import os, uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=int(os.getenv("PORT", 8301)))