Add OpenAI site verification

domains/_openai-site-verification.manthansomani.json

@@ -0,0 +1,10 @@
+{
+  "owner": {
+    "username": "ManthanSomani",
+    "email": "manthansomani860@gmail.com"
+  },
+  "records": {
+    "TXT": "openai-site-verification=Z_a8aXVQKCOjkiZYfcYFR8fAIS4RGjckEUWOtx9KENY"
+  },
+  "proxied": false
+}