Idea Summary
Loving the push notification and how easy is to setup. One thing, why aren't all the config options implemented in the API?
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/showNotification
Use Case
Be able to use an image in a notification or buttons to interact with the notification.
Preferred Solution (Optional)
Add all the parameters or maybe even better and more future proof, add the option for a parameter in apex_pwa.send_push_notification to send the options object (instead of the individual parameters).