LAD ToDos

[LucasEhinger]

Some taken from PR 40

TODO:

• Change the chisq cut, use the difference between best chisq
• Implement front and back wall matching in THcLADHodoscope (Add 2-plane hit matching to LADHodoscope #41)
• If there are two hits in THcGoodLADhit, implement logic to also consider only one (See Tracking with GEM and hodoscope #40 (comment))
• Check D0 cuts in THcLADGEM
• Add checks if any hits is used by multiple tracks
• Add proton cut in ladkine