Investigate usage of React Pose

[netzwerg]

Current hand-crafted animations are very sub-optimal...

Warning: Maximum update depth exceeded. This can happen when a component calls setState inside useEffect, but useEffect either doesn't have a dependency array, or one of the dependencies changes on every render.
    in Timeline
    in div
    in Unknown

[netzwerg]

The warning is fixed now. Usage of the pose lib might still be worth investigating, but lower prio...