rotationToNormal 
 Returns normal (direction) vector based on pitch and yaw rotation.
   Arguments 
  - pitch- A pitch rotation (rotation in x-axis)
- yaw- A yaw rotation (rotation in y-axis)
  Example 
 {
  "$template": {
    "$comment": "The field below will be [0,-0,1]",
    "test": "{{rotationToNormal(0, 0)}}"
  }
}