Add password entry to create a new customer account

[asimonia]

Context

Given that a customer wants to use Bangazon CLI to purchase items. When the customer chooses to create a new account, a password must be entered in for their profile, in addition to all current information

See #14

Expected Behavior

First, select 1 in the main menu. Below the sequence of steps that should occur:

1. You should be able to enter your password twice.
2. Characters are masked for security purposes.
3. You should be able to view a hashed password added to the customer object in the database.