Animation on the Omni Model root

[AshlyTheWolf]

I had noted that there is a thing just called 'root' in the editor but no way to add animation to it. It would be nice to add animation for times where you would want to move all of the model at once rather than painstakingly animate each part the way you want it to. Maybe called the animate-able version 'waist' to mirror the one vanilla humanoid models' have.