List mantras

{
    "success": true,
    "message": "Mantras fetched successfully",
    "data": {
        "items": [
            {
                "name": "Gayatri Mantra",
                "slug": "gayatri-mantra",
                "short_description": "The revered Vedic prayer for clarity and inner light.",
                "mantra_text": "ॐ भूर्भुवः स्वः …",
                "audio_url": "https://audio.hastaai.in/audio/mantras/abc123",
                "is_premium": false,
                "chant_count": 108,
                "is_saved": false,
                "has_reminder": false
            }
        ],
        "total": 72,
        "offset": 0,
        "limit": 10
    }
}