List SFTP connectors

Example response

{
  "count": 2,
  "results": [
    {
      "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
      "credentials": "ee5d0e45-b098-47bc-8217-e93790243dfa",
      "schema": "f9e8d7c6-b5a4-3210-9876-543210fedcba",
      "schedule": {
        "type": "every_n_minutes",
        "minutes": 15
      },
      "directory": "/uploads",
      "file_regex": ".*\\.csv$"
    }
  ]
}