Updates to V0Finder

1. reco_mcbm.sh: New options (separate directory for different steps, lambda in mCBM, retrieving a tsa file name from and index list)
2. reco_mcbm_job.sh: Settings to run reco_mcbm.sh from the box on virgo (vs. runID and jobID)
3. cbm::kfp::V0FinderTask: minor bug fixes