Implemented Customer Creation and Retrieval Support

In WWW::LogicBoxes
  Added consumption of WWW::LogicBoxes::Role::Command::Customer

Created WWW::LogicBoxes::Customer
  Contains all attributes
  Consumes new WWW::LogicBoxes::Types

Created WWW::LogicBoxes::Types
  Implemented types
    Int
    EmailAddress
    Str
    PhoneNumber
    Password
    Language

Created WWW::LogicBoxes::Role::Command::Customer
  Implemented subs
    create_customer
    get_customer_by_username
    get_customer_by-Id
    _construct_customer_from_response

In WWW::LogicBoxes::Role::Submit
  Added support for id responses which aren't actually JSON (Really?)

Created t/05-customer.t
  Added test for use Case
    Create a US Customer