21.2_NewVrtSecInclusiveTool

Backpropagation of the NewVrtSecInclusiveTool package from master to 21.2. This tool is supposed to replace the original VrtSecInclusive algorithm. Upgrades/improvements:

1)Outdated Graph(CERNLIB) package is replaced by Bron&Kerbosch algorithm from BOOST 2)Fake(fragmentation+pileup) and hadronic interaction vertices are removed using a dedicated MVA 3)Additional material interaction rejection is based on the TrackingGeometry material layers 4)Many improvements in vertex topology resolution 5)One-track vertices are allowed (e.g. 3 track system, where one track crosses 2 others in different places, so that 3-track vertex has inacceptable Chi2, will be resolved as 2-track + 1-track vertices). This allows to get 2 vertices in case of e.g. cascade B->D decay with 3 reconstructed tracks in total. 6)Algorithm is converted to Tool for convenience of usage in other Algorithms. 7)Several tool configurations, suitable for different problems, are provided, e.g.: SoftBFinderTool - targeting Soft b-tagging for SUSY InclusiveBFinderTool - inclusive B-hadron decay reconstruction (a la CMS/D0) for "normal" b-tagging DVFinderTool - search for displaced vertices produced by exotic particles