Support Swift PM

[fassko]

For that need to move source to Sources, but these are some resources helped me a while back. (no particular order)

https://www.raywenderlich.com/750-an-introduction-to-the-swift-package-manager https://theswiftdev.com/2017/11/09/swift-package-manager-tutorial/ https://medium.com/developerinsider/create-a-library-using-swift-package-manager-stepwise-tutorial-181604ec8a7 https://www.swiftbysundell.com/posts/building-a-command-line-tool-using-the-swift-package-manager

[BasThomas]

Pull requests welcome :)

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[fassko]

Heh, I can do it, just then I will reorganize all the project. :P