Feature: Manually start special breaks

[DoctorDinosaur]

I'd like the feature to be able to manually trigger a special break of a preset time period, rather than having to define them to trigger at certain times.

This would let me, for example, start a lunch timer whenever I feel like eating; start a chat timer for some time talking to friends; start a game timer to play games for a while. It's hard to do things at set times in the day.