Open requested to merge work/seekto into master
Allows the website to register a handler for seeking media.
seekTime is provided in seconds, conveniently matching the player position which we use.
fastSeek is optional and not supported by us as we don't do a distinction between "multiple subsequent
seek calls" and the final one
- Managed to seek the video through https://googlechrome.github.io/samples/media-session/video.html