Add functorcollection for vertex isolation
Follows Rec!3090
Functorcollection aiming at replacing the old tuple tool TupleToolVtxIsoln.cpp for the new FunTuple framework.
Fix on ParticleIsolation functorcollection to align the logic with ConeIsolation and VertexIsolation
Work towards completion of DPA task https://gitlab.cern.ch/lhcb-dpa/project/-/issues/178.