Add an option to create a APNS file based on input

[AvdLee]

This would probably be a subcommand that allows generating a payload for the given input parameters.
It can be interesting to have as you can drag APNS files into the simulator.

The APNS file can be checked into repositories for easy use within teams. You could imagine yourself adding APNS files for each push notification type that is supported.

[github-actions]

This issue is stale because it has been open for 30 days with no activity. Remove the Stale label or comment or this will be closed in 10 days.

[techinpark]

@AvdLee It's working ?

[AvdLee]

It's not, I haven't build this in yet!