Adding support for the ONNX Scatter operation

[mepatrick73]

Pull Request Template

Checklist

• Confirmed that run-checks all script has been executed.
• Made sure the book is up to date with changes in this PR.

Related Issues/PRs

#1714

Changes

Summarize the problem being addressed and your solution.

Testing

Describe how these changes have been tested.

[codecov]

Codecov Report

Attention: Patch coverage is 98.87640% with 1 line in your changes missing coverage. Please review.

Project coverage is 86.09%. Comparing base (c94e743) to head (c77a046).
Report is 108 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/burn-import/src/burn/node/base.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2197      +/-   ##
==========================================
+ Coverage   86.08%   86.09%   +0.01%     
==========================================
  Files         695      696       +1     
  Lines       89049    89138      +89     
==========================================
+ Hits        76656    76744      +88     
- Misses      12393    12394       +1     

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