Return script hooks list

Example response

{
  "data": {
    "categories": [
      {
        "category": "RPM::Versions",
        "events": [
          {
            "event": "MariaDB-server",
            "stage_order": [
              "pre",
              "post"
            ],
            "stages": [
              {
                "actions": [
                  {
                    "category": "RPM::Versions",
                    "description": "A script description.",
                    "enabled": 1,
                    "event": "MariaDB-server",
                    "exectype": "script",
                    "hook": "/scripts/postcourier-authlibup",
                    "id": "KQVO65K_8MWe__3JMPETn43S",
                    "stage": "post",
                    "weight": 100
                  }
                ],
                "description": "My hook script.",
                "stage": "post"
              }
            ]
          }
        ]
      }
    ]
  },
  "metadata": {
    "command": "list_hooks",
    "reason": "OK",
    "result": 1,
    "version": 1
  }
}