Return a list of backup destinations

Example response

{
  "data": {
    "destination_list": [
      {
        "disable_reason": "Could not list files in destination: example",
        "id": "0W1ei2rd3A4lI5sT6he7Be8st",
        "name": "destination_name",
        "type": "Local",
        "aws_access_key_id": "s123456789",
        "bucket": "ChockFullOfNuts",
        "folder": "subfolder",
        "timeout": 300
      }
    ]
  },
  "metadata": {
    "command": "backup_destination_list",
    "reason": "OK",
    "result": 1,
    "version": 1
  }
}