Implement OnyxFlyout support component

[JoCa96]

Why?

The current OnyxFlyoutMenu is only intended to be used in the NavBar, but it's already used in different places.
From aria perspective, the current implementation is incorrectly used elswhere

Open questions / TODOs

Depends on

Design

Acceptance criteria

Implementation details

<-- Add technical details / implementation proposals if necessary, e.g.:

• API proposal
• relevant web APIs
• learnings from other implementations
• code snippets
  -->

Reference implementations

Applicable ARIA Pattern

Definition of Done

• The following component requirements are implemented:

  • skeleton
  • density
  • example usage added to apps/demo-app/src/views/HomeView.vue

• Should be covered by tests:

  • functional tests (Playwright or unit test)
  • visual tests (Playwright screenshots)

• Make sure, that

  • follow-up tickets were created if necessary
  • updated version + documentation is deployed
  • Storybook can show the feature
  • Storybook code snippet of new/changed examples are checked that they are generated correctly
  • Namings are aligned with Figma

Approval

Storybook
Documentation

• Checked and approved by
  • designer
  • dev