add passProps to notificationOptions

[VitaliiK91]

This pull request adds ability to pass arbitrary props to NotificationBody component.
Props can be passed like:

const passProps = {
  type: 'error',
};

this.props.showNotification({
  title: 'You pressed it!',
  message: 'The notification has been triggered',
  onPress: () => Alert.alert('Alert', 'You clicked the notification!'),
  passProps,
});

[VitaliiK91]

Hi @robcalcroft, any suggestions for this pull request? Any chances it can get merged? Thanks! 🙏

[robcalcroft]

Hey! Sorry about the late response. Happy for this feature to go in with a couple of few changes.

1. First can we rename passProps to additionalProps, I think that language is clearer about what they are.
2. Secondly can you not spread them and instead pass them like additionalProps={additionalProps}, I'd like to keep the top level props scope clean from arbitrary props.
3. Can you add this new prop to the README and document it.

[VitaliiK91]

@robcalcroft Thanks for reviewing, I addressed your comments. Let me know if it looks good. Best regards!

[VitaliiK91]

@robcalcroft Thanks for reviewing, if everything looks good maybe it could be merged?

[robcalcroft]

Done 😄 sorry about the wait will release it on npm now