input: Write a python function to generate a list of unique random integers between 0 and 10.
  assert len(generate_unique_random_list()) <= 11
  assert all(0 <= num <= 10 for num in generate_unique_random_list())
  assert len(generate_unique_random_list()) == len(set(generate_unique_random_list()))
output: import random
  
  def generate_unique_random_list():
      return random.sample(range(11), 11)