Write a new noise utility to play a sound randomly

[nickmckay]

Following the same format as other functions in noises.py, write a function for random_noise(). This function will play one of the five cat noise mp3 files in the sound folder randomly.

• Write the random function in noises.py
• Incorporate the function in Cat class using the existing function Cat.make_noise. Use parameter noise = "random". Look at how meowing is already incorporated.
• Edit the docstrings for this function to reflect the new sound
• Create a test for the new function. Note that since this function already exists, it already has tests. Reuse as much as possible.

[jeanmico]

I'm interested in working on this!