[1pt] Create Genre class with methods - Daf

[mikemtzp]

• Create Genre class with an association to the Item class (in a separate .rb file).

  • All Genre class properties visible in the diagram should be defined and set up in the constructor method.

• Implement methods:

  • add_item method in the Genre class
    • should take an instance of the Item class as an input
    • should add the input item to the collection of items
    • should add self as a property of the item object (by using the correct setter from the item object)