feat: JointEmbeddingSCVI

[ori-kron-wis]

added files from Valentine's repo

[codecov]

Codecov Report

❌ Patch coverage is 91.81034% with 19 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.67%. Comparing base (a63e223) to head (21e7e58).

Files with missing lines	Patch %	Lines
.../low_count_models/deterministic_thinned/_module.py	66.66%	13 Missing ⚠️
.../scvi/external/low_count_models/thinned/_module.py	82.60%	4 Missing ⚠️
...scvi/external/low_count_models/non_zero/_module.py	97.14%	1 Missing ⚠️
...l/low_count_models/utils/_joint_embedding_utils.py	96.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #3748       +/-   ##
===========================================
- Coverage   88.20%   71.67%   -16.53%     
===========================================
  Files         229      244       +15     
  Lines       22636    22868      +232     
===========================================
- Hits        19965    16391     -3574     
- Misses       2671     6477     +3806     

Flag	Coverage Δ
autotune	?
cuda	?
custom_dataloader	?
integration	71.67% <91.81%> (+0.20%)	⬆️
internet	?
jax	?
macos	?
mlflow	?
nonjax	?
optional	?
private	?
resolution	?
windows	?

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

Files with missing lines	Coverage Δ
src/scvi/external/__init__.py	85.71% <100.00%> (+0.42%)	⬆️
src/scvi/external/low_count_models/__init__.py	100.00% <100.00%> (ø)
...low_count_models/deterministic_thinned/__init__.py	100.00% <100.00%> (ø)
...l/low_count_models/deterministic_thinned/_model.py	100.00% <100.00%> (ø)
...ernal/low_count_models/joint_embedding/__init__.py	100.00% <100.00%> (ø)
...xternal/low_count_models/joint_embedding/_model.py	100.00% <100.00%> (ø)
...ternal/low_count_models/joint_embedding/_module.py	100.00% <100.00%> (ø)
...cvi/external/low_count_models/non_zero/__init__.py	100.00% <100.00%> (ø)
.../scvi/external/low_count_models/non_zero/_model.py	100.00% <100.00%> (ø)
...scvi/external/low_count_models/thinned/__init__.py	100.00% <100.00%> (ø)
... and 6 more

... and 85 files with indirect coverage changes

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[ori-kron-wis]

close #3734