Add dhyan99.thedev.id (#491)

subdomains.json

@@ -57,6 +57,7 @@
   "devbox": "devbox-nu.vercel.app/",
   "devinesia": "devinesia.github.io",
   "dhruvil": "dhruvilmoradiya.github.io",
+  "dhyan99": "d99-1.github.io",
   "dontkill": "dontkill.github.io",
   "dook": "portfolio-beta-five-72.vercel.app",
   "drmonocle": "monocledr.github.io",