List all webhooks

curl --request GET \
  --url https://api.jetemail.com/webhooks \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "webhooks": [
    {
      "uuid": "a1b2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d",
      "name": "Production Webhook",
      "url": "https://example.com/webhook",
      "secret": "whsec_abc123def456...",
      "events": [
        "outbound.delivered",
        "outbound.bounced",
        "inbound.received"
      ],
      "status": "enabled",
      "filter_users": null,
      "filter_domains": [
        "example.com"
      ],
      "created_at": 1736524800,
      "last_modified": 1736524800
    }
  ]
}