Cloud Tracker Class

Write a class CloudTracker with an initializer __init__(self, name, height) (height in meters). Implement a method grow(self, amount) that adds amount to the height. If amount is less than or equal to 0, raise a ValueError. Implement a method get_status(self) that returns '{name} is at {height}m'.

Also write a helper function test_tracker(name, height, grow_amount) that instantiates the class, calls grow(grow_amount), and returns get_status(). If a ValueError is raised, it should catch it and return 'invalid growth'.