Too much hassle to ensure that the list was not duplicating the entries in the list

The original implementation also caused infinite loop by appending to the list that was iterated over causing ddsim to use up all the memory and not do anything

Added a test with an example ddsim steering file

Everywhere but in Meta, where we want to allow adding arbitrary information

Geant4DetectorConstruction: forward debugLimts, printPlacements, printSensitives to Converter code from plugin