feat: clean up repositories

[karlbaumhauer]

User Story

As a maintainer of the Solid Design System, I would like to have our github organization cleaned up, so that I easily find respective repositories for my work, and only see currently relevant code.

Suggested Solution

DoR

• Item has business value
• Item all subtasks have been estimated by the team
• Item is clear and well-defined
• Item dependencies have been identified

DoD

• All subtasks have been closed