Update track truth origin tool
This MR makes the following changes:
- Revamped the categorization of secondary origins in
InDetTrackTruthOriginTool
to make it more flexible and robust - Added the categories "StrangeMesonDecay" and "StrangeBaryonDecay" for more coverage (instead of only Kshort and Lambda)
- Adapted the FTAG source label for tracks to be based on the new categories rather than on Lambda and Kshort
Edited by Nils Benedikt Krengel