examples: add Jupyter notebook with beta-hairpin data analysis

[AldoGl]

Proposed changes

I propose to merge @wildromi branch where she added a new Jupyter notebook examples with a beta-hairpin data analysis using two different data representations.

Types of changes

What types of changes does your code introduce?
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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

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• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works

[AldoGl]

I will add another commit that links the notebook to the documentation

[codecov-commenter]

Codecov Report

Merging #76 (f03ba9c) into main (33d150b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #76   +/-   ##
=======================================
  Coverage   78.16%   78.16%           
=======================================
  Files          10       10           
  Lines        1177     1177           
=======================================
  Hits          920      920           
  Misses        257      257           

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[AldoGl]

Rebasing and merging after private feedback from @wildromi