Add a Clock class and a separate unit test class.

$8.$ Design and add tests for the different features of your Clock class.

$9.$ Implement your $12$ or $24-$hour clock design.

$10.$ Implement a simple Main method to confirm that your Clock works. A loop that tells the

clock to Tick a number of times and prints the time is enough!

Note: Test driven development suggests that you create the tests before you create the

code. IDEs like Visual Studio include refactoring tools to create stub methods for features

that do not yet exist.