Timer playback settings

Specify the timings and behaviours of a timer.
Playback settings properties are defined directly in the createTimer() parameters Object.

createTimer({
┌───────────────────┐
│ duration: 1000,   │
│ frameRate: true,  ├─ Playback Settings
│ loop: true,       │
└───────────────────┘
  onBegin: () => {},
  onLoop: () => {},
  onUpdate: () => {},
});