feat: add scripts and dependencies for server functionality in package.json

Author: enjoy15

chat-app/frontend/package.json

@@ -6,4 +6,13 @@
   "keywords": ["chat", "frontend"],
   "author": "",
   "dependencies": {}
-}
+
+  "scripts": {
+    "start": "node server.js",
+    "dev": "node --watch server.js"
+  },
+    "dependencies": {
+    "cors": "^2.8.5",
+    "express": "^4.21.2"
+  }
+}