Switch to PNPM Workspace

[J3m5]

This pull request transitions our project's package manager from yarn to pnpm, configuring it to operate as a workspace. This change brings several improvements to our workflow and project structure:

• Enhanced Dependency Management: By leveraging pnpm workspaces, we can now more efficiently manage dependencies across multiple packages. This setup allows us to include the react-esi build as a seamlessly integrated dependency for our examples.

• Dependency Updates and Refactoring: The transition includes a thorough update of our project dependencies to their latest versions.

• Configuration Enhancements: Improvements have been made to our project's configuration settings.

• Examples Updated: All examples have been updated to reflect the latest versions of React and Next.js.

• Better compatibility: The WithESI component have been enhanced for improved compatibility in different environments. This includes more accurate detection mechanisms for client/server/bundler scenarios.

• Production ready Dockerfile: I added a production-ready Dockerfile to our examples. This allows us to test the react-esi implementation in a production environment, ensuring that our changes do not impact production builds.

[dunglas]

Could you also re-add the Next.js example to the official Next.js repository? This gives more visibility to the project.

[dunglas]

Feel free to merge when CS will be fixed @J3m5!