separate segments from node dialog to segment dialog OK
Trestle (bridge) OK
node:
- remove OK
- create new OK
node with 1 segment: in front OK
node with 2 segments: on side OK
node with 3 segments: disabled OK
- split node
track OK
switch OK
segment
- remove OK
- add span
- inject node OK
visualizer
- show segments connected to node OK
- show segments by group id
telegraph pole - move OK - rotate OK
track span visualizer
span dialog - lover, upper segment, distance
track node editor closed => State.SelectedAsset not set to null
track node remove with shift: do not delete segment - connect it to other node