Adjust Card Component in Figma

[jannick-ux]

The initial branch is merged, but this is the follow up ticket to improve the component.

• remove focus states
• minimize variants (delete unnecessary items)
• minimize layer structure
• delete bg color property (white is default -> no need for a property here)
• create more examples
• adjust existing examples
• create a vertical and a horizontal variation when it makes sense (property)
• Create a dev-handover sheet with basic textual description (e.g. standard padding to edges, optional bottom bar, flexible headline types, etc)
• feel free to ask when having questions