[Cast] Support shuffle mode

Use case description

Currently (as of version 1.5.1), CastPlayer does not support shuffle mode:

getShuffleModeEnabled():
https://github.com/androidx/media/blob/76088cd6af7f263aba238b7a48d64bd4f060cb8b/libraries/cast/src/main/java/androidx/media3/cast/CastPlayer.java#L629-L633

setShuffleModeEnabled(boolean):
https://github.com/androidx/media/blob/76088cd6af7f263aba238b7a48d64bd4f060cb8b/libraries/cast/src/main/java/androidx/media3/cast/CastPlayer.java#L624-L627

I didn't find any issue/PR open related to this feature. Is there any blocker to support it?

Alternatives considered

We're currently experimenting with our own simple implementation that looks like (we updated the list of available commands):

override fun getShuffleModeEnabled(): Boolean {
    return false
}

override fun setShuffleModeEnabled(shuffleModeEnabled: Boolean) {
    remoteMediaClient?.queueShuffle(null)
}

But we're not sure if that's the way to go.