Br 4.0dev - #30

Update Core API to Abstractions API
Remove typed message requirement for MessageProcessor - now take byte[]
Remove multiple message requirement for MessageProcessor - now take byte[] representing a single message
Update Workbench and Workbench tests to reflect API changes

Updating abstractions network based calls to use CompletableFutures
Update workbench to match abstractions; because calls are local and in-memory the completable futures are stubbed.

Rename sendUIAlert to logMessage

Remove NextSimulationTime and TimerHandler metadata

Update DigitalTwinBase with CRTP
Update processing context to be strongly typed
Updated init context to be strongly typed
Update timer handler to be strongly typed
Update workbench to use newly strongly typed classes

… about timers

…lert provider change

…ndler string from timer metadata

Update property names in DigitalTwinBase
Improve timers
Remove unused DigitalTwinTimerMessage

Adding DeleteResult and CreateResult enums
Updating ProcessingResult to include Remove value
Updating ProcessingContext to include removeRealTimeTwin method