* Add "currentTime" and "event" body params to view endpoint
* Merge watching and view endpoints
* Introduce WatchAction AP activity
* Add tables to store viewer information of local videos
* Add endpoints to fetch video views/viewers stats of local videos
* Refactor views/viewers handlers
* Support "views" and "viewers" counters for both VOD and live videos
Introduce viewers attribute for live videos
Count views for live videos
Reduce delay to see the viewer update for lives
Add ability to configure video views buffer interval and view ip
expiration
- added `startAt` and `endAt` optional timestamps to help pin down reported sections of a video
- added predefined report reasons
- added video player with report modal
For now we Create these activities, but we should just send them
directly.
This fix handles correctly direct Dislikes/Flags/Views, we'll implement
the sending correctly these activities in the next peertube version
