Introduce & host react example application

[thrbnhrtmnn]

Description / User Story

With this task we want to introduce a new react example application with a similar state of the current vanilla JS application ( #643 ). The task also includes hosting of the react application like we also did with the JS application ( #644 ) and also add a link to it on boilerds.com.

---

Acceptance Criteria

• [ ] The react example application works, incl. its own build process.
• [ ] The react example application consumes the component library build
• [ ] The react example application includes the same components as the vanilla JS application
• [ ] The react example application has been hosted similar to the vanilla JS application and can be reached the same way from Storybook
• [ ] The react example application is also linked on boilerds.com next the the vanilla JS application

---

Background information

• There was a react example app before from a really early time of the project, it got removed with #825 to not confuse the first users.

[thrbnhrtmnn]

We decided today in the Weekly Checkup to move this task back and to after the alpha release and plan in #643 instead