Add Vercel configuration file for server deployment

Author: deepraj21

server/vercel.json

@@ -0,0 +1,9 @@
+{
+    "version": 1,
+    "builds": [
+        {"src": "server.py", "use": "@vercel/python"}
+    ],
+    "routes": [
+        {"src": "/(.*)", "dest": "server.py"}
+    ]
+}