GEOPY-2786: add a mthode to access the reshaped values in geoh5py for 2d grid and 3dgrid

[MatthieuCMira]

GEOPY-2786 - add a mthode to access the reshaped values in geoh5py for 2d grid and 3dgrid
add a method on grid2d and block model to access shaped data

[Copilot]

Pull request overview

Adds convenience APIs on Grid2D and BlockModel to retrieve cell-associated data reshaped into grid-aligned numpy arrays, with accompanying unit tests.

Changes:

• Add shaped_data_values(...) to Grid2D and BlockModel.
• Add shared _get_unique_data(...) helper on GridObject to resolve a unique Data entity and validate its association.
• Add tests covering reshaping behavior and basic error cases.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
geoh5py/objects/grid_object.py	Introduces _get_unique_data helper for resolving/validating Data references.
geoh5py/objects/grid2d.py	Adds Grid2D.shaped_data_values returning 2D-shaped cell data (with V-axis flip).
geoh5py/objects/block_model.py	Adds BlockModel.shaped_data_values returning 3D-shaped cell data using Fortran ordering.
tests/grid_2d_test.py	Adds tests for Grid2D.shaped_data_values and error handling.
tests/block_model_test.py	Adds test for BlockModel.shaped_data_values.

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[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.18%. Comparing base (61d64e0) to head (790b4cf).
⚠️ Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
geoh5py/objects/grid_object.py	76.92%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #863      +/-   ##
===========================================
+ Coverage    91.14%   91.18%   +0.03%     
===========================================
  Files          115      115              
  Lines        10332    10353      +21     
  Branches      1911     1915       +4     
===========================================
+ Hits          9417     9440      +23     
+ Misses         490      487       -3     
- Partials       425      426       +1     

Files with missing lines	Coverage Δ
geoh5py/objects/block_model.py	98.50% <100.00%> (+0.09%)	⬆️
geoh5py/objects/grid2d.py	89.65% <100.00%> (+0.29%)	⬆️
geoh5py/objects/grid_object.py	96.00% <76.92%> (-4.00%)	⬇️

... and 2 files with indirect coverage changes

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