Refactor case studies to separate out SDSS and Galsim Figures

[ismael-mendoza]

Since current journal article will only use galsim simulations for evaluation. SDSS figures will be for future work and are in a separate case study.

• new BlissFigure class that has a more limited scope and thus easier to use
• separate out sdss_galaxies into two different case studies folders.
• new bliss.plotting module for functions that will be used to create plots in more than one case study

[review-notebook-app]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB

[codecov]

Codecov Report

Merging #703 (7177515) into master (ccc71e2) will decrease coverage by 0.48%.
The diff coverage is 41.37%.

❗ Current head 7177515 differs from pull request most recent head d5104db. Consider uploading reports for the commit d5104db to get more accurate results

@@            Coverage Diff             @@
##           master     #703      +/-   ##
==========================================
- Coverage   87.55%   87.06%   -0.49%     
==========================================
  Files          26       26              
  Lines        3711     3689      -22     
==========================================
- Hits         3249     3212      -37     
- Misses        462      477      +15     

Flag	Coverage Δ
unittests	87.06% <41.37%> (-0.49%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
bliss/reporting.py	93.95% <13.33%> (-5.63%)	⬇️
bliss/models/lensing_binary_encoder.py	76.37% <20.00%> (ø)
bliss/generate.py	100.00% <100.00%> (ø)
bliss/models/binary.py	99.22% <100.00%> (ø)
bliss/models/galaxy_encoder.py	95.34% <100.00%> (ø)
bliss/models/galaxy_net.py	92.30% <100.00%> (ø)
bliss/datasets/galsim_galaxies.py	95.85% <0.00%> (-1.56%)	⬇️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more