Problem 1: Phone book.
A phone book file is organized so that each line is an entry for one person. Each line has the
following format: first, a name (one word, no spaces), then zero or more phone numbers, each
preceded by a space (no spaces within a phone number).
For example, these lines might be entries in a phone book file:
Karen 555-231-5437 898-340-9870
Write a function named getPhoneBook() that takes one parameter - the name of a file.
getPhoneBook() should read the contents of the named file into a dictionary in which each
name is a key and each value is a list of associated phone numbers.
getPhoneBook should return (not print out!) the dictionary it constructs.