Add command line to replace constants in a model

[xadupre]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 79.84496% with 26 lines in your changes missing coverage. Please review.

Project coverage is 82.48%. Comparing base (381d829) to head (8cfddd3).

Files	Patch %	Lines
onnx_array_api/tools/replace_constants.py	86.53%	14 Missing ⚠️
onnx_array_api/_command_lines_parser.py	50.00%	11 Missing ⚠️
onnx_array_api/npx/npx_functions.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #87      +/-   ##
==========================================
- Coverage   82.56%   82.48%   -0.08%     
==========================================
  Files          62       63       +1     
  Lines        8117     8241     +124     
==========================================
+ Hits         6702     6798      +96     
- Misses       1415     1443      +28     

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