Order custom pizzas

I think it would be cool to have a `Pizza` object, and a `Menu.search_topping()`  function, where we could do something like this:

`Menu.search_topping(Name="Cheese")`
And that would return
`
NAME        ID                 
CHEESE      CHESE `
 and then 
`
cheese = "CHESE"`
`pizza = Pizza(Code="PIZZACODE")`
`pizza.add_toppping(cheese, AMOUNT)`
ect....
`Order.add_item(pizza)`