story(sbb-progress-indicator): initial implementation

[OkanBostan]

• state: open
• figma: https://www.figma.com/file/9r6xSfNmEfCFxl1yFYedrj/Lyne-Components?node-id=140%3A17

Feature Description

We want to review/refactor the lyne-button implementation.

https://lyne.sbb.ch/components/lyne-button

Figma Spec

References

Design Spec

Technical Spec

Definition of Done

• [ ] Component is implemented
• [ ] Tests are implemented
• [ ] E2E Tests are implemented
• [ ] Storybook stories are implemented
• [ ] Navigation via keyboard is tested
• [ ] Screen reader output is tested
• [ ] High-contrast is tested
• [ ] Remaining accessibility is tested
• [ ] UX approved