DML2QPN does not handle throughput probes for DML_USAGEPROFILE::SystemCallUserAction

In the qvto mapping

mapping DML_USAGEPROFILE::SystemCallUserAction::CreateStructure( entryPlace : QPN::Place, exitPlace : QPN::Place, color : QPN::Color, probe : QPN::Probe)

only Responsetime probes are handled, but throughput probes are skipped

Refinement of #27 (closed)