Animations do not work properly

It seems like some issue with the axes disagreeing between the ModelResource and the Animation.

[This code properly animates a 3D model.](https://github.com/grishavanika/skeletal_animation_sample/blob/373eb8e77e6df21759319ed0c962f9391f57e853/main.cpp#L296-L297) It's likely to be helpful in rewriting the animation files for this engine.