Add Vercel configuration for domain verification

domains/_vercel.mominulhaquesagar.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "mh-sagar74",
+    "email": "mominulhaquesagar@gmail.com"
+  },
+  "records": {
+    "TXT": ["vc-domain-verify=mominulhaquesagar.is-a.dev,40e92583b0be1904a463"]
+  }
+}