Configure IDTPM truth decorations algs along with client tool
This MR simplifies how the Truth decoration alg is scheduled in IDTPM.
While testing I struggled with this command:
runIDTPM.py --inputFileNames=myAOD.root --trkAnaCfgFile ef_track.json
as it ignored the analysis Cfg file entirely.
The other change is to make the tool to complain rather than fallback to default.
Tagging @maparo @piazza @imaznas Related JIRA: ATLIDTRKCP-583