Add pile-up information so we can do proper PU reweighting #7
Description
Currently commented out here https://github.com/SUEPPhysics/SUEPScouting/blob/mods/plugins/ScoutingNanoAOD.cc#L354
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Currently commented out here https://github.com/SUEPPhysics/SUEPScouting/blob/mods/plugins/ScoutingNanoAOD.cc#L354