dev(narugo): add support for bit image processor

[narugo1992]

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[codecov]

Codecov Report

Attention: Patch coverage is 91.42857% with 3 lines in your changes missing coverage. Please review.

Project coverage is 96.79%. Comparing base (44e38ed) to head (59d2968).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
imgutils/preprocess/transformers/bit.py	91.17%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #138      +/-   ##
==========================================
- Coverage   96.84%   96.79%   -0.05%     
==========================================
  Files         116      117       +1     
  Lines        4147     4182      +35     
==========================================
+ Hits         4016     4048      +32     
- Misses        131      134       +3     

Flag	Coverage Δ
unittests	96.79% <91.42%> (-0.05%)	⬇️

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