General Setting to disallow Cron invokation from browser for standard installations

[TBroMEM]

I am aware there is a way to configure the system to disallow this, but it would be much easier if this was a simple General Setting to disallow out.

For example, add a check box to the General Settings labeled 'disallow cron invocation from admin url (e.g. /cron/crons.php)'. Then in the crons.php code check for the value for the setting and if it is set, then don't do anything. Instead, report that this action is disallowed as defined in System Settings > General Settings.