add: rahulkumarmutcherla domain to the domains directory

domains/rahulkumarmutcherla.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "mutcherlarahulkumar",
+    "email": "rahulkumarmutcherla@gmail.com"
+  },
+  "records": {
+    "CNAME": "https://portfolio-new-zeta-rose.vercel.app/"
+  }
+}