Suggest to enhance electron's screen sharing params


If display scale factor is not equal to 1, the media stream quality will be downgraded. Suggest to multiply scale factor.
As was:
maxWidth: window.screen.width,
maxHeight: window.screen.height
To be:
maxWidth: window.screen.width * window.devicePixelRatio,
maxHeight: window.screen.height * window.devicePixelRatio

You should probably create a PR for this - open a ticket on github.