Currently building command

The "currently building" command lists all currently running jobs (not the queued ones).
This listing includes some additional information like the Nodes and Executors as well as the elapsed time and the estimated remaining time.

The command can be triggered by the commands "cb" and "currentlyBuliding".

Example messages with one job in progress:

Currently Building:

• master#0: Test (Elapsed Time: 3 minutes 16 seconds, Estimated Remaining Time: 13 minutes)

Example messages with no job in progress:

Currently building:

• No jobs are running.