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