Create u3-26.queue.py

# TASK:
#
# Write a random tester for the Queue class.
# The random tester should repeatedly call 
# the Queue methods on random input in a 
# semi-random fashion. for instance, if 
# you wanted to randomly decide between 
# calling enqueue and dequeue, you would 
# write something like this:
#
# q = Queue(500)
# if (random.random() < 0.5):
#     q.enqueue(some_random_input)
# else:
#     q.dequeue()
#
# You should call the enqueue, dequeue, 
# and checkRep methods several thousand 
# times each.