More accurate camera resolution and capabilities

[ojack]

Is your feature request related to a problem? Please describe. It seems possible to get more accurate information about camera resolution and capabilities by calling track.getCapabilities() on an already active user media track. https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/getCapabilities

Still researching this and will document more information here.

[DAnthony18]

Having issues pushing high resolution on facetime camera. Workaround is to use OBS as a default camera in chrome. Once I've made that the default camera, LiveLab allows me to push high resolution on facetime camera.