Need to re-implement a method for locking out employees while working

[tdmalone]

The first versions of Slackémon - which ran inside an existing proprietary Slack framework in our office - had a feature that locked staff out from playing it while they had a toggl timer running (this was how I avoided the risk of being asked not to continue making Slackémon available :) ).

That's not in the current version, because it depended on features available in that framework's environment.

To move my office over to the new current version - that is, the one here on GitHub! - I need to re-implement that, but obviously now in a hookable way.

I'm thinking perhaps an option to set a webhook URL that will be called periodically, sending across Slack user IDs of active users and requesting their 'status'. That webhook URL could then respond with a flag for those users that should be 'locked' out. This would allow me to respond in a custom manner from our office when Slackémon users have a toggl timer running - and will hopefully allow anyone else to integrate their own custom logic in (eg. lock people out during business hours, etc.)