input: Write a function to create a Text-to-Speech Python application to read out a simple sentence. The function should take a sentence as input and use the pyttsx3 library to convert the text to speech.
  assert text_to_speech("Hello, this is a simple sentence")==None
  assert text_to_speech("Python is a versatile language")==None
  assert text_to_speech("Text-to-Speech is fun")==None
output: import pyttsx3
  
  def text_to_speech(sentence):
      engine = pyttsx3.init()
      engine.say(sentence)
      engine.runAndWait()