Push Hero - Test Notifications

Push Hero is a universal application written in pure Swift that allows us to easily test push notifications.

Features
- Save and load many push templates, where each template can be for each app or different testing scenarios. 
- Template has a name to easily identified
- Support token based authentication method with p8 file
- We can enter token content directly, or select with document picker
- Organize into multiple push testings
- Can send push to multiple device tokens
- Show success message with push id so you can easily track down
- Many options, including push type for iOS 13, priority and environment.