Create _vercel.mickychog.json for domain records

Add Vercel configuration for domain ownership verification.

domains/_vercel.mickychog.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "mickychog",
+    "email": "mickychog@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=mickychog.is-a.dev,5e04327d1e0043551b23"
+  }
+}