iOS 跳转到设置

应用跳转到设置，这是目前可行的方案。

guard let newUrl = URL.init(string: "App-Prefs:root=NOTIFICATIONS_ID"), let newUrl2 = URL.init(string: UIApplication.openSettingsURLString) else { return }
        
        if #available(iOS 11.0, *) {
            if UIApplication.shared.canOpenURL(newUrl2) {
                UIApplication.shared.open(newUrl2, options: [UIApplication.OpenExternalURLOptionsKey : Any](), completionHandler: nil)
            }
        }
        else {
            if UIApplication.shared.canOpenURL(newUrl) {
                if #available(iOS 10.0, *) {
                    UIApplication.shared.open(newUrl, options: [UIApplication.OpenExternalURLOptionsKey : Any](), completionHandler: nil)
                }
                else {
                    UIApplication.shared.openURL(newUrl)
                }
            }
        }