GEOPY-2591: geoimage/grid2d conversion of non rectangular geoimage

[MatthieuCMira]

GEOPY-2591 - geoimage/grid2d conversion of non rectangular geoimage
avoid more bugs with geoimage:

1/ georeferencing now acts normaly. (however tie points must meet certain conditions)

2/ more protections to convert to grid2d

3/ add unittests

[codecov]

Codecov Report

❌ Patch coverage is 96.55172% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.10%. Comparing base (9a2627c) to head (bb829e5).

Files with missing lines	Patch %	Lines
geoh5py/objects/geo_image.py	97.11%	2 Missing and 1 partial ⚠️
geoh5py/shared/utils.py	92.30%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #826      +/-   ##
===========================================
+ Coverage    91.07%   91.10%   +0.03%     
===========================================
  Files          115      115              
  Lines        10118    10222     +104     
  Branches      1877     1899      +22     
===========================================
+ Hits          9215     9313      +98     
- Misses         481      486       +5     
- Partials       422      423       +1     

Files with missing lines	Coverage Δ
geoh5py/shared/conversion/geo_image.py	85.93% <100.00%> (+3.24%)	⬆️
geoh5py/shared/cut_by_extent.py	92.10% <100.00%> (+0.15%)	⬆️
geoh5py/shared/utils.py	91.80% <92.30%> (+0.02%)	⬆️
geoh5py/objects/geo_image.py	96.73% <97.11%> (+1.00%)	⬆️

... and 2 files with indirect coverage changes

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[benk-mira]

Just a few comments, looks great!