Add Vercel configuration for domain verification

domains/_vercel.pramuditha.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "PramudithaN",
+    "email": "pramudithanadun@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=www.pramuditha.is-a.dev,479fd6f37a93995b6f97"
+  }
+}