Add dang.json for domain configuration

domains/dang.json

@@ -0,0 +1,18 @@
+{
+  "repo": "https://github.com/chanhdangcom/chanhdang.com",
+  "owner": {
+    "username": "chanhdangcom",
+    "email": "chanhdang@penphy.edu.vn"
+  },
+  "target": {
+    "A": {
+      "name": "dang",
+      "value": ["216.198.79.1"]
+    },
+    "TXT": {
+      "name": "_vercel",
+      "value": "vc-domain-verify=dang.is-a-good.dev,6d68daff59a521321f6e"
+    }
+  },
+  "proxied": false
+}