Date support

[defagos]

As a developer integrating Pillarbox I want to be able to seek to a specific date, provided such information is returned in a stream.

Acceptance criteria

• Seeking to a date is possible for streams delivering date information.
• Progress information can be obtained as a date for streams delivering date information.
• Chapters can be defined with dates if available.
• The demo displays dates for livestreams when available (similar to the system UI).

Hints

• Consider AVDateRangeMetadataGroup for navigation markers and possibly.
• Dates can appear in-on demand streams and livestreams.

Tasks

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