Add ops.random.shuffle

[james77777778]

I believe this op could be helpful when I came across the following PR:
#884 (comment)

[fchollet]

Thanks for the PR. Yes, this is a useful op! Please also add it in keras_core/random/random.py so we can export it to the public API and document it.

[fchollet]

Unlikely but nevertheless the test will be flaky some % of the time unless it is seeded. I recommend using a seed.

[james77777778]

Done. seed=0 has been added.

[codecov]

Codecov Report

Patch coverage: 86.20% and project coverage change: -3.84% ⚠️

Comparison is base (b4019bc) 83.63% compared to head (eeb31d6) 79.80%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #907      +/-   ##
==========================================
- Coverage   83.63%   79.80%   -3.84%     
==========================================
  Files         318      318              
  Lines       28391    28420      +29     
  Branches     5409     5413       +4     
==========================================
- Hits        23745    22680    -1065     
- Misses       3147     4281    +1134     
+ Partials     1499     1459      -40     

Flag	Coverage Δ
keras_core	79.72% <86.20%> (-3.81%)	⬇️
keras_core-jax	?
keras_core-numpy	60.70% <34.48%> (-0.03%)	⬇️
keras_core-tensorflow	67.05% <41.37%> (-0.03%)	⬇️
keras_core-torch	69.41% <44.82%> (-0.03%)	⬇️

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

Files Changed	Coverage Δ
keras_core/backend/jax/random.py	27.45% <33.33%> (-72.55%)	⬇️
keras_core/backend/torch/random.py	86.81% <80.00%> (-0.85%)	⬇️
keras_core/backend/numpy/random.py	100.00% <100.00%> (ø)
keras_core/backend/tensorflow/random.py	100.00% <100.00%> (ø)
keras_core/random/random.py	86.66% <100.00%> (+1.48%)	⬆️

... and 25 files with indirect coverage changes

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[james77777778]

Please also add it in keras_core/random/random.py so we can export it to the public API and document it.

I didn't notice that there is a path for keras_core/random/random.py.

The function and corresponding docstring have been added.

EDITED:
I believe the CI failure is unrelated to this PR, and I have no idea about it.

[fchollet]

LGTM, thank you for the contribution! The test failure is unrelated indeed, just a flake.