Adjust animated body parts while sneaking

[ZsoltMolnarrr]

Is your feature request related to a problem? Please describe. When animation plays on players while they do sneak, some of the animated body parts are not adjust. Hence some body parts are visually detached. https://github.com/ZsoltMolnarrr/SpellEngine/issues/36

Describe the solution you'd like Please investigate, if it is possible to fix this within PlayerAnimator.

Describe alternatives you've considered All mods relying on PlayerAnimator could implement their own way to counter this problem.

Additional context