addImageObject(imgUrl) {
    if (!imgUrl) {
      return Promise.reject(rejectMessages.invalidParameters);
    }

    return this.execute(commands.ADD_IMAGE_OBJECT, imgUrl);
  }
Add image object on canvas
@param {string} imgUrl - Image url to make object
@returns {Promise<ObjectProps, ErrorMsg>}
@example
imageEditor.addImageObject('path/fileName.jpg').then(objectProps => {
    console.log(ojectProps.id);
});