* add button state / helper dialog

* new audio screen share flow

* change error message

* address a couple of merge conflicts

* fix lint

* address code review

* address code review

* restrict audio screen share on mobile browsers

* feat: Change the screenshare capture fps from UI.
Add the ability to change the capture frame rate for screenshare from the UI. The fps becomes effective only on screen shares that are started after the setting is changed.

* squash: add missing JSDOCs and translations for frames-per-second.

* audio only screen share implementation

* clean up

* handle stop screen share from chrome window

* update icon