feat: add breadcrumb component

[sarahbrng]

Proposed changes

add DBBreadcrumb component with documentation and examples

Types of changes

• Bugfix (non-breaking change that fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (improvements to existing components or architectural decisions)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Further comments

🔭🐙🐈 Test this branch here: https://design-system.deutschebahn.com/core-web/review/1309-umsetzung-der-komponente-im-code-anhand-konzept-design-für-alle-frameworks

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[michaelmkraus]

The collapsedMenu prop is part of the props, but it is never used in the implementation.
We should either implement this behaviour as part of this story or drop the property for now to avoid exposing misleading props.

[michaelmkraus]

If no property ellipsisAriaLabel is set, the button doesn't have an aria-label. We should use a default value.