Impl brent solver

[cpmech]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 99.61278% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 99.21%. Comparing base (e4090e6) to head (3439ac7).
Report is 241 commits behind head on main.

Files	Patch %	Lines
russell_lab/src/algo/testing.rs	98.84%	3 Missing ⚠️
russell_lab/src/algo/min_solver_brent.rs	99.53%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #96      +/-   ##
==========================================
+ Coverage   99.08%   99.21%   +0.13%     
==========================================
  Files         146      174      +28     
  Lines       32028    39146    +7118     
==========================================
+ Hits        31734    38839    +7105     
- Misses        294      307      +13     

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