cubicweb-worker #6781193 Provide an interface and api to handle and show progress of tasks [done]

prioritynormal
typeenhancement
done in4.0.0
load1.000
load left0.000
closed by#707d5ca22813 Provide a task progress tracking infrastructure
patch[entities] the cooperative abort logic has been replaced by a preemptive kill [applied][views,entities] provide an ui control to abort a task [applied]Provide a task progress tracking infrastructure [applied]