Restructure documentation

[ch1bo]

Why

The documentation is currently quite fragmented and not consistent between user and developer documentation.

To improve upon this, we want to analyse and test a different structure with improved user journey / experience.

What

As a first step we outlined a better distribution of sections in this sitemap draft:

• [x] Create a branch with an outline matching what is currently in the draft
• [x] Meet with tech writers Monday 2024-03-18
• [ ] Create / move pages according to outline, but only with placeholders content with one sentence "what this page will be about"
• [ ] Meet again to speak about the landing page
• [ ] Implement the documentation changes
  • [ ] Try that prominent entry pages (according to our analystics) are redirected