Create a function where an owner can take a specific cat to the vet

[nickmckay]

Write a function called vet_visit(Cat) to take the cat specified by the "Cat" parameter to the vet. When the cat visits the vet eats its mood parameter decreases by 1 and its health parameter increases by 1.

• Write the vet_visit() function in the Owner class in human.py.
• Edit the docstrings for this function, including usage a example.
• Create a test for the new function.

[arshdeep6456]

I want to try this one