Banded Ridge TRFs

[vinaysraghavan]

Reference Issues/PRs

What does this implement/fix? Explain your changes.

Adds BandedTRF class for modeling features using TRFs trained with banded ridge regression.
Includes examples showing 1. That banded regularization outperforms standard TRFs by determining regularization separately for each feature and 2. BandedTRFs are dependent on the order of features used

Any other comments?

[gavinmischler]

Pretty useful functionality! Just a few comments, and we should try to get the doc-render working

[codecov]

Codecov Report

❌ Patch coverage is 91.39785% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.41%. Comparing base (8be3445) to head (c84e256).
⚠️ Report is 50 commits behind head on main.

Files with missing lines	Patch %	Lines
naplib/encoding/banded_trf.py	90.53%	16 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #222      +/-   ##
==========================================
+ Coverage   74.03%   74.41%   +0.37%     
==========================================
  Files          58       60       +2     
  Lines        4287     4718     +431     
==========================================
+ Hits         3174     3511     +337     
- Misses       1113     1207      +94     

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