farm$\_$animal.py : FarmAnimal

All farm animals have constructor that has a single age $($in years$)$ instance attribute $($use self.age as the name$)$

All farm animals have a str conversion method that prints the class type and age; you can do this with only a single str method in the FarmAnimal or you can override as needed.

All farm animals have a make$\_$sound method that returns a string

The method in FarmAnimal should just return an empty string

All farm animals have an equal $(\_\_$eq$\_\_)$ method that returns true if the objects are the same class type and the same age

That is$,$ two $3-$year$-$old Hen instances are equivalent, but a Cow and Duck are never equivalent.