more analytics + refactor
- passes player with time to start (until we move this api to watchman)
- supports livestream metrics for buffering
- fixes bug with buffering over 10 second period
- less head calls by moving to videojs-events
* review fixes
## Issue
I couldn't find where the i18n went because the "events" refactor is just as confusing as the original -- unrelated things are still lumped together in a file.
Also, factoring based on events isn't useful -- it is features that drive what events are needed, not the other way around. This forces features to register events here, and do other things elsewhere? It will be more intuitive to have a one-file-per-feature structure.
## Change
Use existing frameworks to encapsulate things to manageable units/features:
(1) the React useEffect files (can be used isolate out React features like 'tap-to-mute' handling).
(2) the videojs plugins framework.
* pull out ads into its own file
* final touchup
* pull out lbry volume class
* using curried function
* coming along well
* almost done keyboard shortcuts
* pulling the guts out
* finishing keyboard shortcuts
* coming along well
* running but needs some testing
* almost done but could still use some testing
* all code working with some flow fixes needed
* fixing flow errors
* finishing flow errors
