List checkouts

{
    "data": [
        {
            "id": "c4e8b1a2-9f3d-4e7a-b6c5-1d2e3f4a5b6c",
            "payment_reference": "PAY-K7M2Q9X4",
            "checkout_url": "https://app.kutanaafrica.com/public/checkouts/PAY-K7M2Q9X4#token=9f3e2a1b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2c3d4e5f6a7b8c9d0e1f2",
            "amount": 150,
            "currency_code": "GHS",
            "status": "pending",
            "customer_email": "ama.mensah@acmecustomer.com",
            "customer_name": "Ama Mensah",
            "customer_phone": "+233241234567",
            "customer_phone_editable": false,
            "description": "Order #ORD-7842",
            "expires_at": "2026-03-27T12:30:00",
            "paid_at": null,
            "created_at": "2026-03-26T12:30:00"
        }
    ],
    "pagination": {
        "total": 1,
        "page": 1,
        "size": 50,
        "total_pages": 1,
        "has_more": false
    },
    "message": "Checkouts retrieved",
    "status": "success"
}