Add _discord.s4huan.json with domain owner details

domains/_discord.s4huan.json

@@ -0,0 +1,10 @@
+{
+  "owner": {
+    "username": "s4huan",
+    "email": "xiao.bytedance@proton.me",
+    "discord": "1497485763133177947"
+  },
+  "records": {
+    "TXT": "dh=7d4a201d3cfba3865a2f88c1643527aee4370e0a"
+  }
+}