Added derivative and Hessian for Cross-in-tray test function

[stefan-k]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (1edfc7d) 90.91% compared to head (c15b733) 90.93%.

Files	Patch %	Lines
crates/argmin-testfunctions/src/crossintray.rs	96.52%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #441      +/-   ##
==========================================
+ Coverage   90.91%   90.93%   +0.01%     
==========================================
  Files         162      162              
  Lines       20170    20287     +117     
==========================================
+ Hits        18337    18447     +110     
- Misses       1833     1840       +7     

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