[Feature] Scrolling Volume and Seek control behaviour on the video player

[anteac]

Im very used to pornganizer's way of scrolling anywhere on the left half of the video player to adjust volume up/down, and right half of the video to seek forward/backward.

This should be pretty easy to implement using JWplayer's api and a event handler for scroll events on the visible player.

Suggest adding a setting to enable and disable this behaviour somewhere and having it disabled by default since its pretty unexpected behaviour if your not used to it.

I don't think it'll work on mobile or not very intuitive anyway so probably best to just not include the scroll event code at all on mobile devices

Issue #2206 is basicly the same but for the grid view.

Also would like having middle click (scroll wheel click) to toggle fullscreen, but not sure what other's opinion about that is or if you even want that, can be annoying sometimes if you scroll too hard

[anteac]

VideoJS and JWPlayer both support controlling volume and seeking via js api so this feature shouldn't cause issues when you switch to videojs

[anteac]

https://github.com/ctd1500/videojs-hotkeys/blob/master/example.html
might be helpful, pretty much provides the volume scroll control behaviour already that I mean