Add DataHandles to proto particle making sequence
Add DataHandles to algorithms which add information to ProtoParticles. Additionally interfaces are made const if possible and therefore many internal variables are removed.
The MR is a first step to get a fully Functional ProtoParticle sequence.
Needs LHCb!2422 (merged).
Needs Alignment!118 (merged).
Reference updates in Brunel!985 (merged).
Replaces also !1775 (closed).
Edited by Rosen Matev