Can hub paper

[canergen]

Adds minified mode to CondSCVI. Simplifies minification for new models. Adds add_latent_posterior mode which keeps count data. Fixes glitches in DE function.

• [X] Tests added and passed if fixing a bug or adding a new feature
• [X] All code checks passed
• [X] Added type annotations to new arguments/methods/functions
• [ ] Added an entry in the latest docs/release_notes/index.md file if fixing a bug or adding a new feature

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 92.94118% with 6 lines in your changes missing coverage. Please review.

Project coverage is 88.94%. Comparing base (9b5f553) to head (0178d45). Report is 150 commits behind head on main.

Files	Patch %	Lines
scvi/model/base/_base_model.py	88.00%	3 Missing :warning:
scvi/module/_vaec.py	92.30%	2 Missing :warning:
scvi/model/_scanvi.py	75.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2379      +/-   ##
==========================================
- Coverage   89.42%   88.94%   -0.48%     
==========================================
  Files         153      153              
  Lines       12566    12566              
==========================================
- Hits        11237    11177      -60     
- Misses       1329     1389      +60     

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[martinkim0]

If possible, could you separate this out into 4 PRs:

• Minified mode for CondSCVI
• Simplification of minification for new models
• add_latent_posterior mode
• Fixes in differential expression

Thanks