Write a function that returns an anonymous function, which transforms its input by adding a particular suffix at the end.
add_ly = add_suffix("ly")
add_ly("hopeless") ➞ "hopelessly"
add_ly("total") ➞ "totally"
add_less = add_suffix("less")
add_less("fear") ➞ "fearless"
add_less("ruth") ➞ "ruthless"
N/A