Schedule configuration

[Mehonoshin]

Let's try to use
https://github.com/Rykian/clockwork#use-with-database-events for keeping schedule in the database.

On scheduler side we need also to create a small GQL-app, maybe based on sinatra or pure rack, that will provide CRUD for scheduling events.

Scheduled entity should have reference to Task model from OmniScrapperHQ app, so we can get a list of tasks that are scheduled for specific moment.

On omniscrapperhq side we need to have a page, which allows to schedule events. When we submit this form - controller performs a GQL query to scheduler API.
To display list of schedules we also call GQL api on scheduler side.

[Mehonoshin]

@artemrakov wdyt, can you implement this?

[artemrakov]

@Mehonoshin Sure