List products

{
    "items": [
        {
            "id": 456,
            "name": "Steam Wallet Top Up",
            "slug": "steam-top-up",
            "category_id": 10,
            "product_type_id": 3,
            "region_code": "GLOBAL",
            "currency_code": "USD",
            "logo": "https://cdn.example.com/logos/steam.png",
            "price": 10,
            "min_amount": 5,
            "max_amount": 100,
            "step": 1,
            "description": "Instant Steam balance top-up.",
            "is_active": true
        },
        {
            "id": 789,
            "name": "PlayStation Store Card 50 USD",
            "slug": "psn-50",
            "category_id": 10,
            "product_type_id": 1,
            "region_code": "US",
            "currency_code": "USD",
            "logo": "https://cdn.example.com/logos/psn.png",
            "price": 50,
            "min_amount": null,
            "max_amount": null,
            "step": null,
            "description": "Redeemable card for PS Store.",
            "is_active": true
        }
    ],
    "page": 1,
    "pageSize": 50,
    "total": 2
}