WNet + models code refactor

[C-Achard]

PR adding WNet self-supervised model, and overhauled code for models usage

Note : merge to main after #34 has been merged (branch dependency)

• Run new pre-commit hooks from this branch on main before merging to avoid conflicts
• Update docs for custom model template
• Document WNet usage
• Add notebook for training
  -> WILL BE DONE IN OTHER PR : Improve ONNX support/UI/docs and add pre-trained ONNX model to HF

[codecov-commenter]

Codecov Report

Merging #36 (3083705) into main (e00806c) will increase coverage by 8.45%.
The diff coverage is 55.11%.

@@            Coverage Diff             @@
##             main      #36      +/-   ##
==========================================
+ Coverage   59.73%   68.19%   +8.45%     
==========================================
  Files          48       51       +3     
  Lines        4555     5524     +969     
==========================================
+ Hits         2721     3767    +1046     
+ Misses       1834     1757      -77     

Impacted Files	Coverage Δ
...ari_cellseg3d/code_models/models/TEMPLATE_model.py	0.00% <0.00%> (ø)
...ari_cellseg3d/code_models/models/model_TRAILMAP.py	0.00% <0.00%> (ø)
...ellseg3d/code_models/models/unet/buildingblocks.py	65.18% <0.00%> (+42.40%)	⬆️
...ri_cellseg3d/code_models/models/wnet/train_wnet.py	0.00% <0.00%> (ø)
napari_cellseg3d/code_plugins/plugin_review.py	77.14% <0.00%> (-0.26%)	⬇️
napari_cellseg3d/dev_scripts/evaluate_labels.py	63.15% <0.00%> (ø)
napari_cellseg3d/code_models/model_framework.py	55.45% <18.75%> (+4.52%)	⬆️
napari_cellseg3d/code_models/workers.py	62.69% <48.96%> (ø)
napari_cellseg3d/_tests/fixtures.py	72.72% <50.00%> (-5.06%)	⬇️
napari_cellseg3d/code_plugins/plugin_crop.py	62.24% <51.85%> (-1.83%)	⬇️
... and 35 more

... and 3 files with indirect coverage changes

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[nastya236]

In my opinion, the code is well written. + documentation to all classes!!
Well done! I commented the places in the code which could be (from my personal perspective) done a little bit more flexible.

[C-Achard]

@MMathisLab Working on rebase now ! Thanks for the review. And yes, docs will be added, just thought I'd open the code for review

[CYHSM]

Code looks good and very clean to me, just added some comments (can also discuss later)