Create a function that takes a string (will be a person's first and last name) and returns a string with the first and last name swapped.
name_shuffle("Donald Trump") ➞ "Trump Donald"
name_shuffle("Rosie O'Donnell") ➞ "O'Donnell Rosie"
name_shuffle("Seymour Butts") ➞ "Butts Seymour"