Setup Notebook for Spectral Extraction Testing

[bjfultn]

It would be very valuable for someone to have a notebook set up which allows testing, debugging, and optimization of different spectral extraction techniques. To build this I would start by using the regression tests as examples:

• tests/regression/test_optimal_extraction.py
• tests/regression/test_optimal_extraction_recipe.py

test_optimal_extraction.py runs the algorithm directly in Python and test_optimal_extraction_recipe.py runs it from a recipe which is defined as a string within that file.

Once you have a notebook that allows you to run the code on a single file then you can start testing the different extraction methods and debugging the algorithms. The algorithm code should all be contained in modules/spectral_extraction/src/alg.py