feat: store disk usage per file
Output e.g.
DIS/CC/5x41/minQ2=100/pythia8CCDIS_5x41_minQ2=100_beamEffects_xAngle=-0.025_hiDiv_1,hepmc3.tree.root,999986,159.107684409,3.75771,230.50506,497.49494,1030.22223,133.77777
for 159.107684409 s overhead, 3.75771 s/event, 230.50506 kB full overhead, 497.49494 kB full/event, 1030.22223 kB reco overhead, 133.77777 kB reco/event.
Edited by Wouter Deconinck