Added LH value from standard and modified NoPix working points for both standard and LRT electrons

I have added the variables LHValue and DFCommonElectronsLHVeryLooseNoPixResult to the Electrons and LRT Electrons collections and tested this change on a ttbar sample (Available here: https://cernbox.cern.ch/s/bymqriQFdNsPWyG). I produced 1000 events before and after the change, with and without trigger skimming, and recorded the file sizes in Mb, as well as the percentage change in file size before and after the change, below. Tagging @ancsmith and @jburzyns and @longjon

EDIT: I have also made the equivalent changes in the legacy config LLP1, which required a change in EGammaLRT.

FILE SIZE (Mb) / event	Before Change	After Change	% Change
With Trigger Skimming	0.0319	0.0320	0.3034
Without Trigger Skimming	0.0566	0.0568	0.2793