Add Vercel verification record for zxyandreay.is-a.dev

Adds the required TXT record so Vercel can verify ownership of zxyandreay.is-a.dev.

domains/_vercel.zxyandreay.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "zxyandreay",
+        "email": "zxyandreay@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=zxyandreay.is-a.dev,cd7155767379427cc4e3"
+    }
+}