WIP: Speedup determination of Calo area in TrackMatch::getTrackMatch3D

Konrad Klimaszewskirequested to merge
conrad_calo_area_speedup into master

This MR relies on LHCb!2267 (closed).

Refactor to use DeCalorimeter::Area instead of DeCalorimeter::Cell_ when determining the calo area a track points to.

Edited by Rosen Matev

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