Demo accessibility with VoiceOver

[defagos]

As a user requiring accessibility features I would like to be able to use the Pillarbox demo application with VoiceOver. As a developer integrating Pillarbox I would like to have a good example of how player accessibility can be implemented.

Acceptance criteria

• The application can be used with VoiceOver.
• Demo players can be used with VoiceOver.

Tasks

• Add VoiceOver support to demo players.
• Ensure the demo application can be navigated with VoiceOver (e.g. escape gesture also on iPad).

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 14 days or if the stale label is not removed.

[github-actions]

This issue has been automatically closed because it has not had recent activity.

[defagos]

We should have the standard slider pose as ours in our custom demo:

.accessibilityRepresentation {
    Slider(progressTracker: progressTracker)
}

(possibly with other modifiers to announce changes during seeks, check how the system UI works), but sadly using the slider this way works but leads to a resource leak. It is likely an issue we should report to Apple.

Otherwise our custom player UI is pretty much already accessible, thanks to the use of SF Symbols.