Building and Installing PurePKG via Xcode

This requires a device running macOS

1. Download or clone the source from https://github.com/lrdsnow/PurePKG
2. Install Xcode 15.0 or above
3. Switch Build target to PurePKGwatchOS for Apple Watch, PurePKGvisionOS for the Apple Vision Pro or just keep it at PurePKG for iOS, tvOS or macOS
4. Select your device as the target
5. Build PurePKG