[Feature] Add Halteorte to station

[kimonmeier]

Description

To help new drivers to focus on the tracks and worry less about thinking where to stop, there should be an addition to the current timeline. When an "Betriebspunkt" is pressed the corresponding "Haltepunkte" of that "Betriebspunkt" should open in a small window that doesn't block the view. These "Haltepunkte" are directional. In the future with the #8 these should be automaticly showed when approaching an stop

Needed

The following issues are needed to go further:

[kimonmeier]

This Feature has a high priority but is very hard to do. So im pushing it back to do other features first