add: nien.netlify.app

subdomains.json

@@ -31,6 +31,7 @@
   "koji": "portfolio-nextjs-gdm7chx6i-kojikanao.vercel.app",
   "lord-xenon": "lord-xenon.vercel.app",
   "minlaxz": "minlaxz-info.web.app",
+  "nien": "nien.netlify.app",
   "nikhil": "nikhilmwarrier.github.io",
   "noel": "noeljacob.github.io",
   "op": "op-bot.github.io",