[Feature]: Allow window-specific audio sharing in WebRTC streams

Describe the feature/enhancement you need

Window-specific audio sharing in WebRTC streams. Having the option to enable/disable audio in full-desktop streams is great, and I'd like to see that for specific windows as well!

The scenario/use case where you would use this feature

Using WebRTC to stream a window and it's specific audio to someone else. Especially important when talking to said person (eg. Discord), since the persons audio will mirror in the stream when doing full-desktop sharing.

How important is this request to you?

Impactful. My app's user experience would be significantly compromised without it.

Suggested implementation

An implementation identical to the current system audio one, where there is a checkbox in the screen sharing menu that toggles audio when window sharing. If enabled, the window's audio will be shared.

What does your app do? Is there a pending deadline for this request?

No response