[0.5pt] Create Item class in a separate .rb file. # 3

[brhanuhailu]

All Item class properties visible in the diagram should be defined and set up in the constructor method. Exception: properties for the 1-to-many relationships should NOT be set in the constructor method. Instead, they should have a custom setter method created.
Add all methods visible in the diagram.
Implement methods:
can_be_archived?() in the Item class
should return true if published_date is older than 10 years
otherwise, it should return false
move_to_archive() in the Item class
should reuse can_be_archived?() method
should change the archived property to true if the result of the can_be_archived?() method is true
should do nothing if the result of the can_be_archived?() method is false