List published books

{
    "books": [
        {
            "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
            "slug": "the-great-controversy",
            "titleEn": "The Great Controversy",
            "description": "A book about the conflict between good and evil.",
            "coverImagePath": "/covers/the-great-controversy.jpg",
            "sortOrder": 1,
            "translations": [
                {
                    "languageCode": "en",
                    "languageName": "English",
                    "title": "The Great Controversy",
                    "description": "A book about the conflict between good and evil."
                },
                {
                    "languageCode": "fr",
                    "languageName": "French",
                    "title": "La Tragédie des Siècles",
                    "description": null
                }
            ],
            "files": {
                "en": [
                    {
                        "fileType": "pdf",
                        "fileSizeBytes": 5242880
                    },
                    {
                        "fileType": "epub",
                        "fileSizeBytes": 2097152
                    }
                ],
                "fr": [
                    {
                        "fileType": "pdf",
                        "fileSizeBytes": 4718592
                    }
                ]
            }
        }
    ]
}