Smarter symmetric decompression

[gdalle]

DI source

• Use the new symmetric decompression from SparseMatrixColorings v0.3.5, with the additional star_set argument
• Merge identical for loops in jacobian and hessian

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.57%. Comparing base (f5d4e32) to head (fec140b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #370      +/-   ##
==========================================
- Coverage   96.58%   96.57%   -0.01%     
==========================================
  Files          99       99              
  Lines        4888     4876      -12     
==========================================
- Hits         4721     4709      -12     
  Misses        167      167              

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