Point stat choice

[ndmlny-qs]

Resolves #1817

Motivation

Allow a user to select which point statistic they want displayed in the Marginal 1D tool: mean or median.

Changes proposed

• Added method to calculate the median of an array in JavaScript.
• Updated the Marginal 1D tool to use the new method.
• Updated the Marginal 1D interfaces to include a new widget component.
• Updated the Python side of the tool to render the new widget.
• Updated Python TypedDict objects to include docstrings for inclusion in the documentation in the future.
• Updated the coin flipping tutorial to use the new point statistic button.

Test Plan

• Updated the coin flipping tutorial, and visually inspected the tool worked.
• Built the documentation locally for testing the new docstrings in Sphinx.
• Built the Docusaurus documentation locally to ensure the new widgets worked.

new-widget-check.webm

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (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 change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• The title of my pull request is a short description of the requested changes.

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[ndmlny-qs]

add the Continuous Ranked Probability Score stat as well