Add nys7974.json with domain owner and record

domains/nys7974.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "yuse1-0256",
+    "email": "yuusei0256@gmail.com"
+  },
+  "record": {
+    "CNAME": "satin-risotto-cover.ngrok-free.dev"
+  }
+}