Task due dates and open dates

[denislavh]

Elevator pitch: Open and due date properties

Time and date of opening and closing a task.

Describe how this new feature adds value to the application
A newly created task will have a createdOn property and the user will have the option to select its due time.

Describe suggested implementation

My idea for the implementation of this feature would be to first add the createdOn property to the TaskItem constructor and and adding a second one which will accept one more variable(due date).The edit command should also be able to change the due date.

Additional context

At each loading of the program it should check if a task has status other than done and its due date and time is earlier than the current date and time, that task should then be marked overdue.

[unbekanntunity]

I think that should be optional. Give the user more freedom.