Add NewVSI implementation to LLP1 Derivation

Add NewVSI implementation with ID and GSF merged input track collections and lepton-associated track requirement + output collections to LLP1.

Update track-thinning algorithms in LLP1. Add LLP1LRTElectronTPThinningTool to retain LRT tracks associated to LRT electrons, and add LLP1LRTGSFTrackParticleThinningTool to manually retain all LRT GSF tracks. Add LLP1GSFVSITPThinningTool to retain GSF tracks associated to NewVSI vertices.

cc @sagara17

File size change study run on 1000 events of ttbar MC with and without trigger skimming, with impact of Electron LRT track-thinning and NewVSI related changes applied sequentially:

FILE SIZE (Mb) / event	Before Change	After Adding LRT Thinning	% Change	After Adding NewVSI	% Change
With Trigger Skimming	72.3142	72.3811	0.0925	73.6967	1.8176
Without Trigger Skimming	105.8570	105.9605	0.0977	107.8216	1.7565