Add plot for memory usage monitoring with LHCb PR

As is currently done for Gauss, but for DaVinci (https://lblhcbpr.cern.ch/dashboards/simulation) . We should do it for at least one clang and one gcc build.

See discussion here: Rec!4000 (comment 8192643) ; lhcb-datapkg/AnalysisProductions!1470 (comment 8196556)