List webhook subscriptions

curl --request GET \
  --url https://api.paysway.dev/webhooks/subscriptions \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "enabled": true,
      "title": "<string>",
      "url": "<string>",
      "events": [
        "<string>"
      ],
      "secret": "<string>"
    }
  ]
}