ComfyUI nodes for SCAIL-pose processing

The code is cleaned, simplified version of: https://github.com/zai-org/SCAIL-Pose

For face and hands, instead of DWPose this uses Vitpose and it's outputs converted into DWpose format for the optional alignment

VitPose detector is available in these nodes: https://github.com/kijai/ComfyUI-WanAnimatePreprocess

NLF model loader is already included in WanVideoWrapper

Reason this is separate repository is the additional requirements of taichi and pyrender