[DOC] Example of Multiview MIGHT and Forest

[adam2392]

Closes #88
Closes #112

Changes proposed in this pull request:

• an example of multi-view random forest
• an example of co-MIGHT (e.g. hypothesis testing with multi view random forest)

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  section of the CONTRIBUTING docs.
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  Writing docstrings section of the CONTRIBUTING docs.
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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (64b8044) 89.73% compared to head (993c30f) 89.73%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #142   +/-   ##
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  Coverage   89.73%   89.73%           
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  Files          41       41           
  Lines        3352     3352           
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  Hits         3008     3008           
  Misses        344      344           

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[adam2392]

Rendered artifacts:

https://output.circle-artifacts.com/output/job/0521793e-4ff3-44fe-a270-ba882be3e601/artifacts/0/dev/auto_examples/hypothesis_testing/plot_MI_imbalanced_hyppo_testing.html

and

https://output.circle-artifacts.com/output/job/0521793e-4ff3-44fe-a270-ba882be3e601/artifacts/0/dev/auto_examples/multiview/plot_multiview_dtc.html

[sampan501]

Sorry, looked over this before and forgot to approve