feat: Convert routes folder to the js files

packages/backend/src/routes/paddle.ee.js

@@ -0,0 +1,16 @@
+import { Router } from 'express';
+import webhooksHandler from '../controllers/paddle/webhooks.ee';
+
+const router = Router();
+
+const exposeError = (handler) => async (req, res, next) => {
+  try {
+    await handler(req, res, next);
+  } catch (err) {
+    next(err);
+  }
+};
+
+router.post('/webhooks', exposeError(webhooksHandler));
+
+export default router;