Reduce redundant required fields in event timeline track declarations #76
Description
Current version of the draft requires https://moq-wg.github.io/warp-streaming-format/draft-ietf-moq-warp.html#name-event-timeline-catalog-require an event timeline track to include
- a packaging attribute with a value of "eventtimeline".
- a depends attribute which contains an array of all track names to which the event timeline track applies.
- a mimetype attribute with a value of "application/json".
- an eventtype attribute declaring the type & structure of data contained in the event timeline track.
Changes
- We should make only the packaging type and eventype fields required for event timeline tracks
- Remove mediatimeline and eventtimeline from role table.
- Update examples