Retrieves a list of suppliers

query {
    suppliers(
        supplier_name: "string"
        created_at: "string" //filter POs created in this day (format Y-m-d H:i:s) - eg: 2023-02-10 20:20:20
        from_created_at: "string" //filter POs create after this day (format Y-m-d H:i:s) - eg: 2023-02-10 20:20:20
        to_created_at: "string"  //filter POs create before this day (format Y-m-d H:i:s) - eg: 2023-03-10 20:20:20
        updated_at: "string" //filter POs updated in this day (format Y-m-d H:i:s) - eg: 2023-02-10 20:20:20
        from_updated_at: "string" //filter POs update after this day (format Y-m-d H:i:s) - eg: 2023-02-10 20:20:20
        to_updated_at: "string"  //filter POs update before this day (format Y-m-d H:i:s) - eg: 2023-03-10 20:20:20
    ) {
        supplier_id
        supplier_name
        contact_name
        contact_email
        telephone
        fax
        street
        city
        country
        region
        postcode
        website
        status
        created_at
        updated_at
    }
}