xAODDigest updates and add new reference file
xAODDigest updates:
- Use argparse module
- Retain original command line functionality to not break existing tests
- add jet1/muon1/elec1/phot1 pt/eta/phi values in output files
- add --extravars and --counter command line options
- Add support for TChain input file list --inputlist (still broken in TEvent)
- Add --outputfilename for text output in case --extravars/--counter/--inputlist
Add new q431 xAODDigest reference file that contains all 12 columns for updated CI test