Request to add 'last_response_time' to the response for Transaction Checks '/api/3.1/tms/check/'.
This would bring this API in line with '/api/3.1/checks' which returns 'lastresponsetime' in the query.
The feature would allow the collection of Transaction Check response times without a separate query to '/api/3.1/tms/check/{check_id}/report/performance' for every N check in scope.
