add CRIRES+ functionality

[arjunsavel]

would no longer be limited to IGRINS! addresses #66.

• need docs — would feed in the json file.
• also need the instrument resolution to get mapped
• also need to add a few lines of tests.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.32787% with 12 lines in your changes missing coverage. Please review.

Project coverage is 73.80%. Comparing base (43ec111) to head (451cc8b).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/scope/noise.py	11.11%	8 Missing ⚠️
src/scope/_version.py	81.82%	2 Missing ⚠️
src/scope/run_simulation.py	93.33%	1 Missing ⚠️
src/scope/utils.py	96.15%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #91      +/-   ##
==========================================
+ Coverage   68.98%   73.80%   +4.82%     
==========================================
  Files          12       13       +1     
  Lines         893      939      +46     
==========================================
+ Hits          616      693      +77     
+ Misses        277      246      -31     

Flag	Coverage Δ
unittests	73.80% <80.33%> (+4.82%)	⬆️

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