input: Write a function to add the word "hipster" before each word in a given sentence.
  assert hipsterify("This is a test") == "hipster This hipster is hipster a hipster test"
  assert hipsterify("I love coding") == "hipster I hipster love hipster coding"
  assert hipsterify("Python is fun") == "hipster Python hipster is hipster fun"
output: def hipsterify(sentence):
      return ' '.join(f'hipster {word}' for word in sentence.split())