input: Write a python function to count the frequency of each word in a given text using the Counter class from the collections module.
  assert count_words("The quick brown fox jumps over the lazy dog.") == {'the': 2, 'quick': 1, 'brown': 1, 'fox': 1, 'jumps': 1, 'over': 1, 'lazy': 1, 'dog': 1}
  assert count_words("Hello world! Hello!") == {'Hello': 2, 'world!': 1}
  assert count_words("A test test test.") == {'A': 1, 'test': 3}
output: from collections import Counter
  
  def count_words(text):
      words = text.split()
      return dict(Counter(words))