add carthical.is-a.dev domain with Vercel verification

domains/_vercel.carthical.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "carthical",
+        "email": "karthikgowdaa24@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=carthical.is-a.dev,da71572a752a655e7b6b"
+    }
+}