List all customers

curl --request GET \
  --url https://api.notchpay.co/customers \
  --header 'Authorization: <api-key>'

{
  "code": 200,
  "status": "OK",
  "message": "Customers retrieved",
  "totals": 25,
  "last_page": 1,
  "current_page": 1,
  "selected": 25,
  "items": [
    {
      "id": "cus_123456789",
      "name": "John Doe",
      "email": "john@example.com",
      "phone": 237600000000,
      "company_name": "ACME Inc",
      "address": {
        "country": "CM",
        "city": "Douala",
        "address_line1": "123 Main St"
      },
      "created_at": "2023-01-01T12:00:00.000Z",
      "updated_at": "2023-01-02T12:00:00.000Z",
      "blocked": false
    }
  ]
}