Add Vercel domain configuration for luan-thnh

domains/_vercel.luanthnh.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "luan-thnh",
+    "email": "luanthanh0322@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=luanthnh.is-a.dev,48fc797022ea406f41c5"
+  }
+}