Library for working with crontab

The library has the next interfaces:

• CrontabManagerInterface
• TasksProviderInterface

CrontabManagerInterface provides working with crontab:

• getTasks - get list of Magento cron tasks from crontab
• saveTasks - save Magento cron tasks to crontab
• removeTasks - remove Magento cron tasks from crontab

TasksProviderInterface has only one method getTasks. This interface provides transportation the list of tasks from DI