Get right foot bottom height.

	void LateUpdate()
	{
		if(animator)
		{
			Vector3 rightFootT = animator.GetIKPosition(AvatarIKGoal.RightFoot);
			Quaternion rightFootQ = animator.GetIKRotation(AvatarIKGoal.RightFoot);
			Vector3 rightFootH = new Vector3(0, -animator.rightFeetBottomHeight, 0);
			Vector3 pos = rightFootT + rightFootQ * rightFootH;
			Debug.Log(pos);
		}
	}