Add array of all tasks' results as variable

[HildaHay]

Feature request

Right now, each task's result is available as an individual variable. I'd like to have another variable that contains all of the tasks' results as an array.

Use case

When my pipeline fails, I'd like to send the programmer a message telling them which task it failed on, to help them figure out what went wrong without having to check the dashboard if it was a simple problem. Right now, it's possible to do this by passing all the individual task result variables to the message task, but combining them into a single array would make this simpler and easier to maintain.

[jerop]

@HildaHay - Thank you for opening this feature request. We already have a proposal to support array Results: TEP-0076: Expanded array support: results and indexing. This feature request is related to #1393 and #3255.

cc @bobcatfish @wlynch

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[lbernick]

Array results have been released! They are available starting in v0.38.0.