input: Write a python function to encode a given message in Base64.
  assert encodeInBase64("Hello, World!") == "SGVsbG8sIFdvcmxkIQ=="
  assert encodeInBase64("Python") == "UHl0aG9u"
  assert encodeInBase64("base64 encoding") == "YmFzZTY0IGVuY29kaW5n"
output: import base64
  
  def encodeInBase64(message):
      message_bytes = message.encode('utf-8')
      base64_bytes = base64.b64encode(message_bytes)
      base64_message = base64_bytes.decode('utf-8')
      return base64_message