[Argo] Count-based enhanced depends logic

[nate-double-u]

Currently, Argo Workflows has a feature called enhanced depends logic that allows users to specify dependent tasks based on their statuses via complex boolean logic. However, this requires users to specify task names explicitly which may be difficult or unnecessary to obtain. For example, there are situations where the tasks are dynamically generated and task names cannot be easily obtained or users might not care the statuses for specific tasks and instead focus on the number of tasks of a particular status. We'd like to implement a count-based enhanced depends logic in Argo Workflows in addition to the existing depends logic based on dependent tasks and their statuses.

Mentor(s): Yuan Tang (@terrytangyuan)

For more information, please see: https://github.com/cncf/mentoring/blob/main/summerofcode/2022.md#count-based-enhanced-depends-logic