StaysInStation wrong behavior

[Quacck]

Describe the bug
Currently, the StaysInStation Pattern works by looking for a status=3 followed by a status=4.
This however creates wrong result as there could be status=3, status=5, .... status=5, status=4;
but this would still trigger the pattern.

Also it detects a unique transport by using the station_id and the train_id which doesn't really work.

Expected behavior
A StaysInStation should only trigger when status=3 is directly before status=4.
It should work on a per train basis, maybe we could implement it like CountOfTrainsInStation in the way that we apply it on a keyed stream.