Add more sptrk chains to the menu (lowmu)
This MR adds several chains for selecting events with track of certain pt (2,4,6,8) seeded from AFP (for the testing - but also as performance chains configured are also variants seeded from L1 random.) Also, a performance chain for PU suppression is added.
Related JIRAs: https://its.cern.ch/jira/browse/ATR-23577
Edited by Tomasz Bold