Improve Device class (Collections) structure

[NZSmartie]

I'm concerned with the ambiguity and readability with accessing Collections or Reports in a Device Class or more accurately the Collection class.

As is the case with examples/dual-shock-3.py there are logical collections nested under the root Joystick collection that are not assigned a Usage. Resulting in code that looks like this

buttons = my_device.desc.reports[1].inputs.joystick[0][1]

To break it down:

• buttons Report =
  • device ➔
    • report descriptor ➔
      • reportID: 1 ➔
        • inputs Collection ➔
          • GenericDesktop Joystick Collection ➔
            • Logical Collection at index 0 ➔
              • Report at index 1

At the moment, i'm not too sure how to make it more readable, will comment on this later