Retuple MC for radiative inclusive lines, supersedes !527

Supersedes v0r0p5604769 !527 (merged)
Previous tuples can be deleted.
Added multiple candidate info (important for tunning of the BDT cut)
Added fields for converted photons and V0 children
Added MCHierarchy, helpful to to better select signal given that photon matching fails in most cases and renders B_BKGCAT unusable, see lhcb/Moore#580 (comment 6857259)