ci: 👷 improve SDS universum pages

[coraliefeil]

User Story

As a maintainer of the Solid Design System, I would like to present the SDS on Universum in the best way possible, so that the assets and templates look appealing and are easy to scan.

Suggested Solution

• [ ] Provide assets
• [ ] Draft out design proposal for templates
• [ ] Remove emojis (should not be used)

Figma File

DoR

• [x] Item has business value
• [ ] Item has been estimated by the team
• [ ] Item is clear and well-defined
• [ ] Item dependencies have been identified

DoD

• [ ] Documentation has been created/updated (if applicable)
• [ ] Implementation works successfully on feature branch

[coraliefeil]

@karlbaumhauer and I had a session and identified some small design tasks to execute whenever there is some gap time.

[coraliefeil]

I can brief you so we can put it in ready and you could pick this task up whenever you have some time. @MartaPintoTeixeira