Adopt traffic participant role specification

[thomassedlmayer]

First draft to adopt the traffic participant role specification from https://publications.pages.asam.net/standards/ASAM_TrafficParticipants_Specification/ASAM_TrafficParticipants_Specification/v1.0.0/specification/07_traffic_participants/07_01_general.html

[jakobkaths]

I'm not too familiar with the OSI structure, but in 3.7 I found the roles under "Vehicle Classification", see screenshot below. Is this something we need to change as we address all kinds of moving objects here?

[thomassedlmayer]

Yes, we should also think about how to include it generically for all moving objects. But I though, we might want to harmonize the existing enum first.

We could just reference the existing enum definition in MovingObjectClassification or - for a cleaner result - move the role enum definition out of the VehicleClassification to be a generic enum definition (osi3::Role instead of osi3::MovingObject::VehicleClassification::Role) and then reference it in two places. I believe this should work in a backwards compatible way because we wouldn't change the data representation by moving enum definitions.

[jakobkaths]

I can't judge the implications on backwards compatibility of your suggestion for the cleaner result, but it does seem like the better / less confusing approach.