Distribute the native assemblies with the maven release

[steffen-wilke]

Right now, the native binaries that are required at runtime to use jinput and steamworks4j are not distributed with our maven central release. we need to find a way to include these natives to reduce friction when distributing a game with the LITIengine. At the moment, the native binaries need to be extracted from the .zip archive of the GitHub release.

[TheRamenChef]

We could include the binaries from the jar's manifest, but I don't know how to do that with Gradle.

[steffen-wilke]

#429