GET /api/v1/processors

{
  "processors": [
    {
      "id": "proc_abc123",
      "name": "Smart PAY Merchant",
      "phone_number": "+23277123456",
      "email": "merchant@smartpay.sl",
      "status": "active",
      "created_at": "2025-01-15T10:30:00Z"
    }
  ],
  "total_count": 25,
  "limit": 50,
  "offset": 0
}