Support for using Swift Package Manager on iOS

[kmasuda050]

EDM4U 1.2.187 now supports Swift Package Manager.
https://github.com/googlesamples/unity-jar-resolver/releases/tag/v1.2.187
https://github.com/googlesamples/unity-jar-resolver/blob/master/upm/README.md#swift-package-manager-support

CocoaPods is currently in maintenance mode. We would appreciate it if you could migrate to Swift Package Manager.