Optimizing nc_data_cluster_wl integration

[caioolivv]

• Optimized nc_galaxy_sd_position_integ by removing gsl_gamma_ran
• Optimize nc_galaxy_sd_shape_integ with nc_wl_surface_mass_density_reduced_shear_optzs (this seemingly makes the integration slower?)

[codecov]

Codecov Report

Attention: Patch coverage is 91.30435% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 63.60%. Comparing base (2e3f954) to head (9b82dc7).
Report is 2 commits behind head on wl_rebuild.

❗ Current head 9b82dc7 differs from pull request most recent head f3b0e1c. Consider uploading reports for the commit f3b0e1c to get more accurate results

Files	Patch %	Lines
numcosmo/galaxy/nc_galaxy_sd_shape.c	71.42%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##           wl_rebuild     #146      +/-   ##
==============================================
+ Coverage       62.39%   63.60%   +1.20%     
==============================================
  Files             489      490       +1     
  Lines           89723    89772      +49     
==============================================
+ Hits            55985    57099    +1114     
+ Misses          33738    32673    -1065     

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