input: Write a python function to create an instance of the Person class and return a string representation of the person's attributes.
  assert create_person("John", 180, 25) == "Name: John, Height: 180 cm, Age: 25 years"
  assert create_person("Alice", 165, 30) == "Name: Alice, Height: 165 cm, Age: 30 years"
  assert create_person("Bob", 175, 22) == "Name: Bob, Height: 175 cm, Age: 22 years"
output: class Person:
      def __init__(self, name, height, age):
          self.name = name
          self.height = height
          self.age = age
  
      def __str__(self):
          return f"Name: {self.name}, Height: {self.height} cm, Age: {self.age} years"
  
  def create_person(name, height, age):
      person = Person(name, height, age)
      return str(person)