Separate compressed evaluation and decompression for sparse

[gdalle]

Core

• Split sparse handling into smaller files
• Define CompressedMatrix type with functions decompress! and decompress_symmetric!
• Define proper Extras subtypes for sparse Jacobian and sparse Hessian, with a cache for all seeds and resulting compressed columns
• Decouple compressed evaluation of columns / rows from decompression
• Document GreedyColoringAlgorithm in the main package (not part of the public API)
• Define and document SymbolicsSparsityDetector in the main package (not part of the public API)

Tests

• Add extras type test within correctness.jl
• Add coloring number tests

Extensions

• Fix extras subtyping for Enzyme and FiniteDiff

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 24 lines in your changes are missing coverage. Please review.

Project coverage is 94.53%. Comparing base (5161e56) to head (0a484ac).
Report is 2 commits behind head on main.

Files	Patch %	Lines
...ferentiationInterfaceTest/src/tests/correctness.jl	50.00%	24 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #212      +/-   ##
==========================================
- Coverage   96.39%   94.53%   -1.87%     
==========================================
  Files          65       15      -50     
  Lines        3554     1610    -1944     
==========================================
- Hits         3426     1522    -1904     
+ Misses        128       88      -40     

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