Improve process to release stable subpackages

[marcosmoura]

Library

React Components / v9 (@fluentui/react-components)

Describe the feature that you would like added

The current process to move a package to stable is manual, which can be a problem to new contributors and can introduce confusion and issues, as we don't have a standard/automated way of doing it.

Improvements:

• Automated process
• Easier to move packages from unstable to stable
• Failproof and faster releases
• Standard commit messages and changelogs

What could be implemented:

• Bump package automatically
• Update beachball disallowedChangeTypes config for package
• Update imports (move away from @fluentui/react-PACKAGE_NAME to @fluentui/react-components)
• Update imports on react-components package for both the main index.ts and for /unstable
• Generate API files for react-components
• Generate changefiles
• Alert or removal of preview banners for storybook documentation:
  **⚠️ Preview components are considered unstable:**

Example of manual PRs created

feat: Release Table and DataGrid as stable
feat: Release Card as stable

Have you discussed this feature with our team

Yes

Validations

• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[Hotell]

implemented by #28505