Draft: Preliminary implementation of track selection algorithm for primary vertex tracks at trigger level

This MR has preliminary changes for implementation of track selection algorithm for primary vertex tracks at trigger level. These primary vertex tracks are used to reconstruct variable radius (VR) track jets. The track selection is run only if the flag doVRJets is set to true, whose default value is false. The VR track jet reconstruction is also run only if the same flag is set to true. So these changes should not affect the existing code.