Listen to intents to restart service on app upgrade/phone reboot

In brief

If previously connected to core, Quasseldroid should restart the service on app upgrades and device reboot
- - Android 8.0+ send a broadcast MY_PACKAGE_REPLACED, while earlier versions send PACKAGE_REPLACED; both versions send ON_BOOT_COMPLETED
- This would be similar to KDE Connect's handling

Edited Apr 28, 2020 by Shane Synan