[Feature Request] support set task as paused and continue

[ishowman]

case

For example, I plan to spend 2 weeks to finish taskA.But 3 days later, I need to do taskB for it is more emergency.
So I wish to pause taskA and finish taskB firstly, and continue taskA after I finish taskB.

expected

I wish the progress bar is still show in the same row, and I can clearly know the task was not done in a single duration（for example, the time of paused task is showwith gray background color）.