input: Write a python function to create a Message object and return its string representation.
  assert str(Message('Hello, World!')) == 'Hello, World!'
  assert str(Message('Python is awesome')) == 'Python is awesome'
  assert str(Message('Test message')) == 'Test message'
output: def Message(text):
      class Message:
          def __init__(self, text):
              self.text = text
  
          def __str__(self):
              return self.text
  
      return Message(text)