Added routing for subfolders to other files + simple first frontend

server/index.js

@@ -18,7 +18,8 @@ app.post("/api/shorten", (req, res) => {
     [id, original_url],
     (err) => {
       if (err) return res.status(500).json({ error: err.message });
-      res.json({ short_url: `http://localhost:5173/${id}` });
+      res.json({ short_url: `http://localhost:3000/${id}` });
+      res.json({ id: `${id}`});
     }
   );
 });