chan1m32isis gtest (#4096)

* Initial constants unit gtest

* Convert chan1m32isis for gtest

* Points badfile test to existing product

* Refactored for logging

* Addresses PR feedback

Copies loc/obs files to temp directory
Converts hist pointer to smart pointer
Removes some unnecessary checks for keys in each test
Uses Cube functions instead of label for samples, lines, bands, etc.

* Replaced badfile apollo with kaguya