Add Vercel configuration for caesar domain

domains/_vercel.caesar.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "itzcaesar",
+        "email": "muhammadcaesarrifqi@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=caesar.is-a.dev,bdadb8b40ff3794e2724"
+    }
+}