API: Download image from a server

Downloads and imports an image from another server.

Request
POST /process/download?url=https://...
url The URL. Note that this must be URI-encoded (e.g. using encodeURIComponent, urllib.parse.quote_plus, or similar).
Response
200 OK
{
  "responseCode": [487, 223, 1076, 672],
  "output": "a1b002.."
}
responseCode The HTTP response code of the server. The image is imported only if the server responded with code 200 (OK, success).
output The downloaded and imported image.