feat(react-headless-components-preview): add Provider component

[dmytrokirpa]

This pull request introduces a new headless Provider component to the react-headless-components-preview package, enabling consumers to wrap their applications with Fluent UI context providers without styling concerns. The addition includes the component implementation, related hooks, type definitions, rendering logic, context value utilities, and comprehensive tests. It also updates dependencies to support the new functionality.

New Provider component and related APIs:

• Added a headless Provider component (Provider.tsx) that wraps required Fluent UI context providers, along with its hook (useProvider), rendering logic (renderProvider), context value utilities (useProviderContextValues), and type definitions (Provider.types.ts). [1] [2] [3] [4] [5]
• Exposed the Provider, useProvider, renderProvider, and related types in the package's main entry points (index.ts, src/Provider.ts, src/components/Provider/index.ts). [1] [2] [3]

Testing:

• Added unit tests for the Provider component, covering default rendering and custom directionality (dir prop).

API documentation:

• Updated the API report to include the new Provider component, its props, state, and hooks. [1] [2] [3] [4]

Dependency updates:

• Added @fluentui/react-provider and @fluentui/react-tabster as dependencies to support the new Provider implementation. [1] [2]

[github-actions]

Pull request demo site: URL

[github-actions]

📊 Bundle size report

Package & Exports	Baseline (minified/GZIP)	PR	Change
react-headless-components-preview react-headless-components-preview: entire library	64.854 kB 19.302 kB	66.827 kB 19.834 kB	1.973 kB 532 B

_{🤖 This report was generated against 3d2d9bf0e07e05f2320e5400efe6c01759426534}