Enable agent metrics on queue level.

On WxCC we can enable agents metrics to find how many agents are available or connected on the team/site level, but there is no possible way to find this on the queue level, so if we have a team that handles multiple queues we can not see who is available on the different queues.

My suggestion is to enable these metrics on the queue level so we can see how many agents are available or connected at the queue, it would be very helpful to manage the queues and the agents.