Given a word, create a function which returns whether or not it's possible to create a palindrome by rearranging the letters in the word.
is_palindrome_possible("rearcac") ➞ True
# You can make "racecar"
is_palindrome_possible("suhbeusheff") ➞ True
# You can make "sfuehbheufs" (not a real word but still a palindrome)
is_palindrome_possible("palindrome") ➞ False
# It's impossible
True.