Problem
The current Pipeline duration time includes pause time spent in "input" steps. I think it would be good to have a separation of build time from time spent waiting for inputs eg. 10m (Paused for 1h) or perhaps if more compact form was required, something like "10m 5s (+1h 2m 3s)".

For clarification, I'm referring to the time quoted by the "Activity" tab "Duration" column, and the value next to the clock symbol in the pipeline run details page.

Requirements
We should be able to determine the time taken:

• In the queue
• pausing for input
• running
• total duration, for the pipeline to run in real time including time spent in queue, paused and running.