Add method guess_dynamic_shapes

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 95.93023% with 7 lines in your changes missing coverage. Please review.

Project coverage is 67.19%. Comparing base (bea8445) to head (22514db).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
onnx_diagnostic/export/dynamic_shapes.py	95.90%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #11      +/-   ##
==========================================
+ Coverage   65.37%   67.19%   +1.82%     
==========================================
  Files          45       47       +2     
  Lines        3532     3704     +172     
==========================================
+ Hits         2309     2489     +180     
+ Misses       1223     1215       -8     

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