Add Vercel configuration for domain verification

domains/_vercel.shivarajnk.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "ShivarajNKengannavar",
+    "email": "shivarajnkengannavar@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=shivarajnk.is-a.dev,3ec4a3407fab11285d6f"
+  }
+}