Add VssNode Support (Vehicle Model) for kuksa.val.v2

[wba2hi]

Is your feature request related to a problem? Please describe.
No, it's a consisteny issue.

Describe the solution you'd like
Right now the generated VehicleModel is only supported by the kuksa.val.v1 API and not by the newly introduced kuksa.val.v2 API

We should align both of them so that kuksa.val.v2 API also can be used with the generated VehicleModel.

Describe alternatives you've considered
n/a

Additional context
n/a