Add status on tasks and notifications

[RMCampos]

Brief description

Allow users to define task statuses. Statuses are pending, in-progress, completed. Also include a simple notification system to let users know that a due date is close.

User Story

As a user, I want to be able to assign a status and receive notications for my tasks.

Acceptance Criteria

• The task should be created with 'pending' status;
• Users can update the task progress by updating the status;
• Users can filter tasks by status;
• Notify users about tasks that will be due within the next 24 hours;
• Notify users about tasks that are overdue.
• Users can enable and disable notifications;
• Tests passing
• PR merged

Additional context

• Originally from issue Add due date and status on tasks #57