The image widget allows editors to upload an image or select an existing one from the media library. The path to the image file will be saved to the field as a string.
*`allow_multiple`: *(default: `true`)* when set to `false`, if the media library extension supports it, multiple selection will be disabled
*`config`: a configuration object passed directly to the media library; check the documentation of your media library extension for available `config` options.