[alpha] LibDataBroker-1.0 port

[Myrroddin]

I ported LibDataBroker-1.1 to Rift as LibDataBroker-1.0. This is 100% UNTESTED, and I fully expect bugs.

The biggest challenge was converting the callbacks to Utility.Event.Create, and I would be thankful if someone tested, or looked at my code to see if I got it even remotely correct.

The Rift events are Event.LibDataBroker.AttributeChanged and Event.LibDataBroker.ObjectCreated

Let me know, good or bad. And especially if you have fixes. This was a good way to pull hair out!

If all goes well, I will release the addon.