WIP: Test for Smog2 reconstruction algorithms adding

Changes to the make_pv function in order to adapt to SMOG2 data-taking, whose PVs are displaced wrt nominal IP (z in [-500, -300]mm) and need a special tuning of the algorihtms. Proposed sequence is : - TBLV running on pp luminous region and producing pp vertices and unused tracks. - (temporary) conversion layer Pr::Selection -> std::vector of the unused tracks - PatPV running on unused tracks and producing pgas PVs - Merge of the TBLV and PV in the default TES location.

MR is WIP since MergeVertices and MakeVector classes are not merged yet in Rec, but only in Rec branch samarian_SMOG2Reconstruction. Test with with_lines.py example successfully run (just substituting make_pvs by merge_pvs).