Add initial dev server

server/node/src/index.ts

@@ -0,0 +1,14 @@
+import express from 'express';
+
+const app = express();
+const PORT = 3001;
+
+app.use(express.json());
+
+app.get('/api/hello', (req, res) => {
+  res.json({ message: 'Hello World!' });
+});
+
+app.listen(PORT, () => {
+  console.log(`Server is running on http://localhost:${PORT}`);
+});