✅Checklist✅: Pathways + User Feedback Collection (2022/4)

# Collection

* [x] https://github.com/Domiii/dbux/issues/436
* [x] add new commands:
* `Dbux Pathways: Start`
* start recording any apps, even outside of practice
* `Dbux Pathways: Stop`
* stop recording
* → make sure, the two commands do the same we do for when initializing pathways as part of a practice project
* [x] also record other important events
* [x] `ApplicationSelectionChanged`

# Visualization

* [ ] small "colored bar" when expanding a CG context
* might help us find out when someone compares CG nodes
* but don't count it toward the context's time