dev -> 3.10 cherry-pick Mission Support bug fixes (#3618)

* Merge Conflicts in Spice.cpp and Spice.h

* Avoid edge cases where the histogram only has one bin (#3616)

* Update photomet's LunarLambertEmperical model to handle PVL input in photemplate format. (#3614)

* Update LunarLambertEmpherical model to handle frompvl input with values of the form PvlKeyword = (1,2,3,3,4) in addition to  PvlKeyword = 1,2,3,3,4

* Added tests for new functionality

Co-authored-by: Stuart Sides <ssides@usgs.gov>
Co-authored-by: Kristin <kberry@usgs.gov>