MIRROR TIMER START

Fired when some sort of timer starts. MIRROR_TIMER_START: timerName, value, maxValue, scale, paused, timerLabel

Payload

 * timerName : string - e.g. "BREATH"
 * value : number - start-time in ms, e.g. 180000
 * maxValue : number - max-time in ms, e.g. 180000
 * scale : number - time added per second in seconds, for e.g. -1
 * paused : number
 * timerLabel : string - e.g. "Breath"