Upload a public file

{
  "success": true,
  "data": {
    "id": "12345678-90ab-cdef-1234-567890ab",
    "created_at": "2024-02-01 04:04:39.198523+00",
    "name": "my-file.png",
    "title": "My File",
    "size": 1024,
    "mimetype": "image/png",
    "url": "https://example.com/my-file.png"
  }
}