Implementation of meson+gamma triggers for Run-3
Adds the tau+photon invariant mass requirement to the triggers in https://its.cern.ch/jira/browse/ATR-22644.
Adds dipion1/2/4 triggers from https://its.cern.ch/jira/browse/ATR-23239.
Adds monitoring histograms for all of these meson+photon triggers.
Edited by Robert James Ward