feat: chart item selection options

[rich-b]

Adds the option to select how highlighting works for popovers.

Description

Previously, only a single item could be highlighted when clicking on a chart element. This change allows highlighting by series, dimension, or item.

This is the first of many changes required to bring this capability to life. It is mostly working with Bar charts only at this point.

Related Issue

#374

Motivation and Context

Teams want to be able to click on an item within a dimension and effectively select and show information for the dimension, not for the single datum. This could also be useful for series data.

How Has This Been Tested?

• Updated existing tests
• Added new test coverage for new code

Screenshots (if appropriate):

Types of changes

• 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:

• I have signed the Adobe Open Source CLA.
• 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.

[github-actions]

🎨 Storybook -> https://opensource.adobe.com/react-spectrum-charts/PR-412

[github-actions]

🎨 Storybook -> https://opensource.adobe.com/react-spectrum-charts/PR-412

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
1 Accepted issue

Measures
0 Security Hotspots
91.5% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[marshallpete]

Looks great to me!