[Feature Request] Add sound effects to notifications.

[ArnavKaushik]

In the showNotification function, there could be a new parameter that when provided with a value (this could either be an enable/disable boolean or the name of the sound as a constant), the notification will make a sound effect.

This will be useful for messaging apps that use this library for in-app notifications. For a potential enhancement, it would be great to have a couple of choices for the sound.

Example Implementations:

// Enable default sound
Notifier.showNotification({
  title: 'John Doe',
  description: 'Hello! Can you help me with notifications?',
  duration: 0,
  showAnimationDuration: 800,
  showEasing: Easing.bounce,
  onHidden: () => console.log('Hidden'),
  onPress: () => console.log('Press'),
  hideOnPress: false,
  enableSound: true,
});

// Choose sound
Notifier.showNotification({
  title: 'John Doe',
  description: 'Hello! Can you help me with notifications?',
  duration: 0,
  showAnimationDuration: 800,
  showEasing: Easing.bounce,
  onHidden: () => console.log('Hidden'),
  onPress: () => console.log('Press'),
  hideOnPress: false,
  playSound: SOUND_CHIME,
});

[stale[bot]]

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