Copy Bone Transforms

/**
 * Node that copies bone transforms from one mesh to another.
 * 
 * Transfers skeleton pose data between meshes, optionally
 * applying skinning deformation to the target mesh.
 * 
 * Usage:
 * 1. Connect source mesh (with pose) and target mesh
 * 2. Enable skinning if needed
 * 3. Output has updated skeleton transforms
 */