- Add a graph about workload namespace configuration.
- This change also divides the structure of the namespaces explanation
page into "workload namespaces" and "fleet namespaces" for better
readability and more clarity. By doing that, another layer of headers
is introduced, for which the TOC on the right hand side has been
adapted to show the same details as before.
- The source of the added graph is added in the `src/img` folder as
Mermaid code.
- Also, paragraphs have been wrapped to a certain max width.
Patrick Seidensal