Move helpers for ProtoParticles from Rec
Move helpers from TrackLike.h to ProtoParticle.h as new NeutralLike.h also needs them.
Needs to be merged together with Rec!2736 (merged).
Move helpers from TrackLike.h to ProtoParticle.h as new NeutralLike.h also needs them.
Needs to be merged together with Rec!2736 (merged).