A fruit juice company tags their fruit juices by concatenating the first three letters of the words in a flavor's name and its capacity.
Create a function that creates the product IDs for the variety of fruit juices.
getDrinkID("apple", "500ml") ➞ "APP500"
getDrinkID("pineapple", "45ml") ➞ "PIN45"
getDrinkID("passion fruit", "750ml") ➞ "PASFRU750"