Define a function next_door that consumes an Address and produces a new Address representing the house that is next door.

An Address has a number (integer), street (string), city (string), and state (string).

You can determine the house next door by increasing the number by 1; if the number becomes 10 or greater, then wrap it back around to 0.

Hint: You can do this without an if statement! Think about what math operators we’ve taught you…