Overlay Timeout Display

**Is your feature request related to a problem? Please describe.**
Some of our venues, especially our state championship, have great video capability with cameras. During a timeout, it would be great to show a video feed from the Arena rather than just a still slide and logo, but we still need the remaining time in the running timeout visible.

**Describe the solution you'd like**
See the left half of this example from FRC, a specific overlay for just timeouts:

- Related, would be nice to have the the timer visible in the Overlay Match Preview, like it is in the fullscreen, if there's a spot to jam it in there somewhere 😊

**Describe alternatives you've considered**
- Just showing the full screen timer :(
- Modifying our video setup to have the full screen timer visible elsewhere
- Cropping the display in our video stack outside of FTCLive