feat(DataTable): add support for title and subtitle

[joshblack]

Add support for title and subtitle for DataTable based on: https://github.com/github/primer/pull/1712

This PR adds in TableContainer, TableTitle, and TableSubtitle along with documentation to link the title and subtitle to a table. This work does not include support for table actions.

This work differs from the API doc in that TableContainer is being used for the overall container where-as I believe DataTable was the containing element in the proposal. Currently, DataTable is used to represent the table itself. Naming seems to be something we can address outside of this PR, instead this is meant to:

• Check that the styles are correct for titles, subtitles
• Check that the markup is correct for titles, subtitles

Changelog

New

• Add TableContainer component for laying out the table
• Add TableTitle component for providing a table title
• Add TableSubtitle component for providing a table description
• Add feature stories for DataTable

Changed

• Update label and description tests to include support for TableTitle and TableSubtitle for labeling and describing a Table
• Update docs.json for DataTable to include TableContainer, TableTitle, and TableSubtitle
• Update storybook config to no longer warn on controls in feature stories

Removed

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Latest commit: c921bd8

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[github-actions]

size-limit report 📦

Path	Size
dist/browser.esm.js	89.59 KB (0%)
dist/browser.umd.js	90.22 KB (0%)

[ericwbailey]

I am not a TypeScript expert, but this looks good from my perspective.

[colebemis]

Looks good! Just left a couple comments about using design tokens