video: add video overlay and video view

- Display name and time on top of the video
- Display the call control on the bottom of the video
- Overlay fade (after 2 sec) when mouse exit the widget
- Overlay appear as soon as the mouse enter the widget
- Move logic into VideoView (screen share / fullscreen)
- Remove mute and slider button on callWidget
- Remove call control on callWidget
- Lay the ground work for the move of the im UI

Refs #74270

Change-Id: I024f1f80f18165c23480ef1e68aa970081732bda