52ca1ef6c2
Introduces isLiveBroadcast to VideoState and PlayerContext to detect live streams (duration is Infinity or 0). Updates ControlsLayer to show a 'LIVE' badge and hide progress/time for live broadcasts. Adjusts VideoElement to set and update isLiveBroadcast on metadata and duration changes. Adds related CSS for the live indicator and improves ESLint config for unused vars.