New L1Calo monitoring alg 'L1CaloLegacyEDM'
requested to merge l1calo-run3-simulation/athena:master-add-l1calo-monitoring-L1CaloLegacyEDMMonitorAlgorithm into master
New algorithm in the monitoring framework that will act as a way of doing software validation plots.
Algorithm has already been approved, had trouble squashing commits, so creating a new MR. See the old MR for comments, etc. here: !50686 (closed)