static scaleBBox(bbox, scale = 1) {
    return {
      ...bbox,
      x: bbox.x * scale,
      y: bbox.y * scale,
      width: bbox.width * scale,
      height: bbox.height * scale,
    };
  }
Scale given BBox by a scale factor
@param {BBox} bbox Original BBox
@param {number} scale Scale factor
@returns {BBox} Scaled BBox