feat: add _vercel.debbouz.json for Vercel TXT verification

domains/_vercel.debbouz.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "brutalpanda1990-oss",
+    "email": "debbouzamine@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=debbouz.is-a.dev,a684bc172ab158439433"
+  }
+}