Pull request

Description

Add tracks selection to PillarboxCastPlayer that can be customized with CastTrackSelector.
Pillarbox provides a default CastTrackSelector that handles only TrackSelectionOverride.
TrackSelectionParametersare not applied again when changing MediaItemas the truth is stored on the CastReceiver and shouldn't be store locally.

Changes made

• PillarboxCastPlayer.setTrackSelectionParameters do modify cast track selection.
• Tracks from Cast are parse correctly.
• Add CastTrackSelectorwith a default implementation DefaultTrackSelector.

Checklist

• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).