Making TouchKit Package for the PackageManager

[theGiallo]

If this repo was set-up as a Unity package, it would be possible to add it as git url into the Unity Package Manager. This would make developers life easier. Also I think it could be possible to use it as dependency for other libraries, given the license.

Infos on how to use and implement:
https://docs.unity3d.com/Manual/upm-git.html
https://docs.unity3d.com/Manual/upm-manifestPkg.html

[theGiallo]

An example of a repo doing this having the whole Unity project in it. https://github.com/dbrizov/NaughtyAttributes/tree/master/Assets/NaughtyAttributes