input: Write a python function to create a Counter class with methods to increment and get the count.
  assert Counter().get_count() == 0
  counter = Counter()
  counter.increment()
  assert counter.get_count() == 1
  counter.increment()
  counter.increment()
  assert counter.get_count() == 3
output: class Counter:
      def __init__(self):
          self.count = 0
  
      def increment(self):
          self.count += 1
  
      def get_count(self):
          return self.count