Support custom strategies to control step execution order

[Charlie17Li]

I am a beginner in argo and I was wondering is it now possible to support custom strategies to control the step scheduling sequence

for example, there are 6 tasks(or steps) and only 2 nodes, the link of paper

After task 1 is completed:
In normal cases, task 2, task 3, and task 4 have the same priority, and their scheduling sequence is task 2, 3, and 4 (schedule 1)
However, when resources are limited, prioritizing Tasks 3 and 4 can reduce the makespan of the entire workflow (schedule 2)