Rework/Enhance Reservation API

[tazend]

Classes

• Reservation class wrapping all members of the C-struct as properties.
• Reservations class, acting as a custom collection (dict) to retrieve all Reservations, while also holding all the Reservation instances which carry the actual information for the invidiual reservation.

General Functionality for a Reservation

• create
• modify
• delete
• get (getting a single reservation)

Other

• Documentation
• Write tests
• Write examples