Return the list of public data files.

GET /api/public-data/?source=direct-sharing-453
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Cache-Control: max-age=0, no-cache, no-store, must-revalidate
Content-Type: application/json
Expires: Mon, 28 Sep 2020 05:29:36 GMT
Vary: Accept

{
    "count": 1,
    "next": null,
    "previous": null,
    "results": [
        {
            "id": 18788936,
            "basename": "heartrate_samples1592974433875.csv",
            "created": "2020-06-24T04:53:57.671462Z",
            "download_url": "https://www.openhumans.org/data-management/datafile-download/18788936/?key=8f1300d0-b623-487c-9ddc-93453dc0f1da",
            "metadata": {
                "tags": [
                    "heartrate"
                ],
                "description": "Heart rate data"
            },
            "source": "direct-sharing-453",
            "user": {
                "id": "77213801",
                "name": "Scott Leibrand",
                "username": "scottleibrand"
            }
        }
    ]
}