Enable cross-dichroics in cube_build

[drlaw1558]

As part of implementing cross-dichroic support in spec2 I realized that in addition to simple reference file updates cube_build also required a few code updates to know how to handle cross-dichroic BAND keywords. These seemed pretty simple, so this PR implements the necessary changes. Tested the new code with the new cubepar to be delivered to CRDS and it successfully builds cross-dichroic data cubes in spec2 and standalone cube build, both internal_cal and regular coordinate frames.

Tagging @jemorrison to verify whether I got anything wrong!

[codecov]

Codecov Report

Merging #5722 (dec92ec) into master (43fbf2d) will increase coverage by 0.14%.
The diff coverage is 90.56%.

@@            Coverage Diff             @@
##           master    #5722      +/-   ##
==========================================
+ Coverage   75.56%   75.71%   +0.14%     
==========================================
  Files         406      406              
  Lines       35473    36177     +704     
==========================================
+ Hits        26806    27392     +586     
- Misses       8667     8785     +118     

Flag	Coverage Δ		*Carryforward flag
nightly	75.57% <80.69%> (ø)		Carriedforward from 43fbf2d
unit	54.50% <88.03%> (+0.56%)	⬆️

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
jwst/cube_build/ifu_cube.py	73.13% <22.22%> (-3.56%)	⬇️
jwst/cube_build/instrument_defaults.py	91.57% <99.61%> (+1.37%)	⬆️
jwst/cube_build/cube_build.py	78.75% <100.00%> (+0.61%)	⬆️
jwst/cube_build/cube_build_step.py	65.48% <100.00%> (-0.71%)	⬇️
jwst/cube_build/file_table.py	100.00% <100.00%> (ø)

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[hbushouse]

Looks OK to me, but I'm no cube_build expert.

[jemorrison]

Seems fine. I just checked CRDS you already have the new cubepars reference file loaded with these new options.
Great.