List Roles Route

curl --request GET \
  --url https://api.example.com/api/roles

{
  "total": 123,
  "roles": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>",
      "is_builtin": true,
      "description": "<string>"
    }
  ]
}