The file widget allows editors to upload a file or select an existing one from the media library. The path to the file will be saved to the field as a string.
| default | string | `null` | _Optional_. The default value for the field. Accepts a string. |
| media_folder | string | | _Optional_. Specifies the folder path where uploaded files should be saved, relative to the base of the repo |
| public_folder | string | | _Optional_. Specifies the folder path where the files uploaded by the media library will be accessed, relative to the base of the built site |