[Feature]: Get information about current lane status

[JuliusMiller]

Description

For a proper overtake we need to know if we are on a single lane or on a multi lane.
So a special message is needed.
Inspiration is found at: https://github.com/ll7/psaf2/blob/59853f08c8aa153fb154a21b766e038186b68333/Perception/road_features/src/road_features/road_features.py

Function: update_road_features

Definition of Done

• A message is published stating if we are on a single lane or on a multi lane