input: Write a function to organize a list of strings based on the number of vowels they contain.
  assert list_organizer(["apple", "banana", "cherry", "date", "fig", "grape"]) == (['apple', 'banana', 'cherry', 'grape'], ['date', 'fig'])
  assert list_organizer(["orange", "pear", "kiwi", "plum"]) == (['orange'], ['pear', 'kiwi', 'plum'])
  assert list_organizer(["strawberry", "blueberry", "melon"]) == (['strawberry', 'blueberry', 'melon'], [])
output: def list_organizer(strings):
      def count_vowels(s):
          return sum(1 for char in s if char in 'aeiouAEIOU')
      
      more_vowels = [s for s in strings if count_vowels(s) > 2]
      less_vowels = [s for s in strings if count_vowels(s) <= 2]
      
      return (more_vowels, less_vowels)