Group triggered workflows into on one "build"

[viktorbenei]

I’ll merge this into Parallel Builds: trigger multiple workflows (builds) at the same time - build stages - fan-out fan-in support as these will be covered by that feature and that has more votes.

Thanks for the infos & details @Torsph and feel free to vote on Parallel Builds: trigger multiple workflows (builds) at the same time - build stages - fan-out fan-in support to bump its priority!