docs: add sensitivities notebook

[martinjrobins]

Description

Fixes #4558

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• New feature (non-breaking change which adds functionality)

Key checklist:

• No style issues: $ pre-commit run (or $ nox -s pre-commit) (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: $ python run-tests.py --all (or $ nox -s tests)
• The documentation builds: $ python run-tests.py --doctest (or $ nox -s doctests)

You can run integration tests, unit tests, and doctests together at once, using $ python run-tests.py --quick (or $ nox -s quick).

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.29%. Comparing base (b0382e6) to head (11569be).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4559   +/-   ##
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  Coverage    99.29%   99.29%           
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  Files          300      300           
  Lines        22776    22776           
========================================
  Hits         22615    22615           
  Misses         161      161           

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[kratman]

I am sort of indifferent to the google collab support since it adds a confusing install for local runs, but if we want to keep supporting that functionality then I think the notebook needs the pybamm install at the top

[kratman]

I am sort of indifferent to the google collab support since it adds a confusing install for local runs, but if we want to keep supporting that functionality then I think the notebook needs the pybamm install at the top

I forgot to mention, that I did not see any other issues with the notebook

[martinjrobins]

I forgot to mention, that I did not see any other issues with the notebook

Thanks @kratman, are you happy to approve this now, or does anyone else want to do a review? (I'm happy to merge if not)