Add Vercel configuration for domain verification

domains/_vercel.pulkit.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "pulkitgupta2",
+        "email": "gpulkit712@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=pulkit.is-a.dev,bb858ce8f5f49b2fd0bc"
+    }
+}