add prefix to debug messages

src/ShortestPath/Transit/TransitShortestPathPrecompute.cpp

src/ShortestPath/Transit/TransitStateContainer.h

src/algorithm/DARP/Heuristics/BestInsertionHeuristic.cpp

src/algorithm/Multimodal/Heuristics/SimpleModularHeuristic.h

src/routes/vehicle/SAEVRoute.cpp