[wip] feat(screensharing): use setDisplayMediaRequestHandler

[ShGKme]

☑️ Resolves

Old approach

1. Using desktopCapturer get the list of available sources
2. Promp to choose the source
3. On Talk side in a special case in IS_DESKTOP instead of usign native getDisplayMedia get stream via getUserMedia for the selected chromeMediaSourceId like video stream

New approach

1. On Talk side handle getDisplayMedia with a custom handler
2. In the handler
   • Using desktopCapturer get the list of available sources
   • Promp to choose the source
3. getDisplayMedia has the source, like in a web-browser

Differences

Pros:

• No special handling on Talk side
• Experimental support for native screen sharing source selector on macOS
  • Also allows to get audio stream

Cons:

• No "Entire desktop with all screens" option for Windows and Linux-no-wayland

• Issue #…

🖼️ Screenshots

🚧 Tasks

• ...