Add bitwise ops

[james77777778]

I need left_shift and right_shift in some cases.
After implementing them, I realized that it might be useful to add these bitwise ops.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 82.26950% with 50 lines in your changes missing coverage. Please review.

Project coverage is 79.33%. Comparing base (b45be33) to head (739d608).
Report is 24 commits behind head on master.

Files	Patch %	Lines
keras/src/ops/numpy.py	82.60%	20 Missing ⚠️
keras/api/_tf_keras/keras/ops/__init__.py	0.00%	9 Missing ⚠️
keras/api/_tf_keras/keras/ops/numpy/__init__.py	0.00%	9 Missing ⚠️
keras/src/backend/jax/numpy.py	89.65%	3 Missing ⚠️
keras/src/backend/numpy/numpy.py	89.65%	3 Missing ⚠️
keras/src/backend/tensorflow/numpy.py	93.18%	3 Missing ⚠️
keras/src/backend/torch/numpy.py	89.65%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #20126      +/-   ##
==========================================
+ Coverage   79.29%   79.33%   +0.03%     
==========================================
  Files         501      501              
  Lines       46984    47270     +286     
  Branches     8659     8672      +13     
==========================================
+ Hits        37258    37503     +245     
- Misses       7976     8019      +43     
+ Partials     1750     1748       -2     

Flag	Coverage Δ
keras	79.19% <82.26%> (+0.03%)	⬆️
keras-jax	62.45% <55.67%> (-0.04%)	⬇️
keras-numpy	57.55% <58.86%> (+0.05%)	⬆️
keras-tensorflow	63.83% <60.99%> (+<0.01%)	⬆️
keras-torch	62.49% <55.67%> (-0.04%)	⬇️

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[fchollet]

Very nice, that's definitely useful. Thank you for the contribution -- LGTM