Add a tutorial on building the BIOCLIM model

[tpoisot]

No description provided.

[github-actions]

Documentation for this PR at https://poisotlab.github.io/SpeciesDistributionToolkit.jl/previews/PR261/

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 55.25%. Comparing base (7caf2b1) to head (6481e45).
Report is 17 commits behind head on main.

Files with missing lines	Patch %	Lines
src/integrations/gbif_layers.jl	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #261      +/-   ##
==========================================
+ Coverage   52.71%   55.25%   +2.53%     
==========================================
  Files          59       58       -1     
  Lines        1713     1504     -209     
==========================================
- Hits          903      831      -72     
+ Misses        810      673     -137     

Flag	Coverage Δ
unittests	55.25% <0.00%> (+2.53%)	⬆️

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