Show Components list in Styleguide

[kati-ux]

Currently, when clicking on "Components" in the Styleguide HeaderNavigation, users are automatically redirected to the first component, ActionGroup.

It would be better if the default view showed an overview page listing all components. This page has the advantage of giving users a complete view of all available components at a glance.

[Jan-Eimertenbrink]

Short idea for inspiration: React Aria uses a very simplified representation of the component in their tiles. And we don’t actually need that many new components right now. Maybe it makes sense to wait for the redesign and then tackle it afterwards.