Create documentation for v4

[goloroden]

What is this feature about?

Once work on v4 is finished, we should focus on the documentation for v4. For this, we need to re-think the structure of the documentation, and then come up with a new version of it.

What needs to be done to implement this feature?

• [ ] Discuss the documentation structure
• [ ] Set up the technological base (Next.js, styled-components, …)
  • [ ] Think of cross-cutting aspects, such as i18n, multi-version, …
• [ ] Discuss how to embed interactive samples
  • [ ] Check out GitHub codespaces
• [ ] Write the documentation
• [ ] Run the documentation locally
  • [ ] Build the documentation when releasing
  • [ ] Allow the CLI to run the documentation
• [ ] Provide the documentation online
  • [ ] Build a Docker image
  • [ ] Deploy to documentation.wolkenkit.io