Removed a lot of items related to the ZDC light guide study. Pushing for now to switch computers. Does not compile yet

Segmented lg

See merge request clantz2/zdclg!1

Removed geom.mac execution. Removed /gps/number because all photons are emitted from one point per event.

Adjusted GetEvent to read higher precision inputs to set momentum vector within 10*-9 of a unit vector

Added ability to inuput photon info from ASCII and changed tree output data type to std::vector<double>