Add Vercel configuration for domain verification

domains/_vercel.aayu.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "meaayu",
+    "email": "bishalnepal.np@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=www.aayu.is-a.dev,56427b1ee9f57ba565e4"
+  }
+}