input: Write a python function to copy and rename a directory based on its creation date.
  assert os.path.exists('/home/batsim/Desktop/Mis simulaciones/test_simulation') == False
  copiar_simulacion('test_simulation')
  assert os.path.exists('/home/batsim/Desktop/Mis simulaciones/test_simulation') == True
output: import os
  import shutil
  import datetime
  
  def copiar_simulacion(directory_name):
      source = os.path.join('/home/batsim/Desktop/Mis simulaciones', directory_name)
      if not os.path.exists(source):
          raise FileNotFoundError(f"The directory {source} does not exist.")
      
      creation_time = os.path.getctime(source)
      creation_date = datetime.datetime.fromtimestamp(creation_time).strftime('%Y-%m-%d')
      new_name = f"{directory_name}_{creation_date}"
      destination = os.path.join('/home/batsim/Desktop/Mis simulaciones', new_name)
      
      shutil.copytree(source, destination)