Request: Start recording countdown and recording light

[TheIcemanCometh]

For video recording, I would like a configurable option to be able to have a countdown timer before recording starts, say 0 to 10 seconds, with a countdown beep the last three seconds.

Also, I would like to see a red light on the app screen that lets me know video is currently recording. This should flash every couple of seconds while recording is active.

[mortenjust]

As of 1.4, the recording button now becomes a red stop button