API endpoint for managing attachments for a specific product.
Accessible via /api/products/{product_pk}/attachments/

GET /attachment/?format=api&page=6
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 51,
    "next": null,
    "previous": "http://pastor-teachapp-backend-496259523959.us-central1.run.app/attachment/?format=api&page=5",
    "results": [
        {
            "attachment_id": 81,
            "attachment_type": {
                "attachment_type_id": 1,
                "attachment_type_key": "PDF",
                "attachment_type_display_name": "PDF Document"
            },
            "title": "Philemon",
            "attachment_file": "https://storage.googleapis.com/everything-teach-app-assets/products/None/attachments/pdf/philemon.pdf",
            "display_order": 11,
            "created_datetime": "2025-12-15T14:57:05.315819Z",
            "product_id": null,
            "content_id": 130,
            "attachment_type_id": 1
        }
    ]
}