Able to see Outline and Tree at the same time

[daslicht]

It would be very useful if we could see the outline and the tree at the same time.
Swithing between both is less optimal.

Maybe make teh outline dockable so athat we could move iot to the right of teh window ?

[jrieken]

/duplicate of #49923

[vscodebot]

Thanks for creating this issue! We figured it's covering the same as another one we already have. Thus, we closed this one as a duplicate. You can search for existing issues here. See also our issue reporting guidelines.

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