Feature: REST endpoint for queue detail

As well as the /queues endpoint which returns the name and size of a queue a customer would like to have an endpoint that lists all the calls in the queue with their callSId, from/to, position and time in queue etc.
This is is so that they can set the correct callerID on an outbound call before they dequeue the call

Start by locating the existing /queues endpoint in the JavaScript API server and trace how queue entries are obtained. Define the response fields for callSId, from/to, position, and time in queue, then verify that the endpoint lets a customer identify the caller ID before dequeuing a call.

Written by the indexing model from the issue text.