Add OSX packaging

[deepnight]

Related: https://community.heaps.io/t/distributing-for-mac-and-linux/490/3?u=josuigoa

Follow up of this issue: https://github.com/deepnight/deepnightLibs/issues/5

Help needed:

• [ ] determine a list all required files for a Hashlink redistributable on OSX
• [ ] when implemented: testing