feat: ✨Evaluate and define a Bottom Navigation component for Solid Design System

[karlbaumhauer]

User Story

As a product team building mobile-first experiences (e.g. KidStarter), I want a reusable Bottom Navigation component in the Solid Design System, so that I can provide a consistent, accessible primary navigation pattern across apps without maintaining custom implementations.

Acceptance Criteria (short)

• A first evaluation clarifies if a Bottom Navigation pattern should be part of SDS (vs. using existing patterns like tabs or top navigation).
• Outcome (go / no-go, open questions, next steps) is documented and, if relevant, follow-up implementation tickets are identified.

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