Write tests for osi::TrafficCommand passed through osi_traffic_participant_interface

CI

link to pipeline: https://ci.eclipse.org/openpass/job/GtGenCore/view/change-requests/job/MR-137/

Common changes

Functionality: receive an osi::TrafficCommand through the osi_traffic_participant_interface, so that the openPASS Complex Controller and SCM can be simulated with ASTAS.

The functionality should be already in place but tests are missing, so the purpose of this story is to write tests for it.

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Additional changes:

current "Mock" from master branch is a TpmExample class in separate .so library which always import: https://gitlab.eclipse.org/eclipse/openpass/gt-gen-core/-/blob/main/Core/Environment/Controller/Internal/ControlUnits/BUILD.bazel?ref_type=heads#L366

Issue: implementation of TpmExample fixed and cannot be tuned in tests and doesn't allow inspect calling arguments.

https://gitlab.eclipse.org/eclipse/openpass/gt-gen-core/-/blob/main/Core/Environment/Controller/Internal/ControlUnits/traffic_participant_model_example.cpp?ref_type=heads#L40

So, current MR refactored TrafficParticipantControlUnit to make it possible to tune behavior of ITrafficParticipantModel and inspect arguments.