Add owner and TXT records to Vercel domain config

domains/_vercel.atharvaupadhyay.json

@@ -3,5 +3,10 @@
         "username": "atharvaupadhyay",
         "email": "atharvaupadhyay001@gmail.com",
         "discord": "atharvaupadhyay"
+    },
+    "records": {
+        "TXT": [
+            "vc-domain-verify=atharvaupadhyay.is-a.dev,4747e89e0114208366c8"
+        ],
     }
 }