LibVLC Linux nuget distribution

Following up on #93 (closed)

I think we could use the same approach as https://www.nuget.org/packages/SkiaSharp.NativeAssets.Linux for some officially supported distribs that we'd choose.

Related: https://github.com/mono/SkiaSharp/issues/453

https://github.com/mono/SkiaSharp/issues/453#issuecomment-457323185