Add Vercel domain verification configuration

domains/_vercel.ervx.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "ervxbit",
+    "email": "ervxbit@duck.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=ervx.is-a.dev,3dc119c2a5ed1b1c773d"
+  }
+}