Add duongkhanhngoc.json, _vercel.duongkhanhngoc.json for domain configuration with owner and CNAME record

domains/_vercel.duongkhanhngoc.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "vidongls",
+        "email": "vidongls12345@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=duongkhanhngoc.is-a.dev,667c68d264de9063bce5"
+    }
+}

domains/duongkhanhngoc.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "vidongls",
+        "email": "vidongls12345@gmail.com"
+    },
+    "records": {
+        "A": ["216.198.79.1"]
+    }
+}