Get active promotions by placement

{
    "timestamp": "2025-10-17T10:05:00",
    "status": 200,
    "success": true,
    "message": "Active promotions fetched successfully",
    "data": [
        {
            "id": 7,
            "title": "Free Shipping",
            "description": "Orders over $50 ship free.",
            "imageUrl": "https://cdn.example.com/banners/freeship.png",
            "ctaUrl": "https://example.com/free-shipping",
            "placement": "homepage",
            "startDate": "2025-10-01T00:00:00",
            "endDate": "2025-10-31T23:59:59",
            "priority": 0,
            "isActive": true
        },
        {
            "id": 42,
            "title": "Weekend Sale",
            "description": "Save 25% on selected items.",
            "imageUrl": "https://cdn.example.com/banners/weekend.png",
            "ctaUrl": "https://example.com/sale",
            "placement": "homepage",
            "startDate": "2025-10-17T00:00:00",
            "endDate": "2025-10-20T23:59:59",
            "priority": 1,
            "isActive": true
        }
    ]
}