Add simulation generic device/value support

This allows high-level library classes to implement enhanced simulation
support even if no low-level corresponding simulation library exists, and
avoids the need for bit-banging complex interfaces like SPI or CAN.

hal/src/main/native/sim/HAL.cpp

@@ -41,6 +41,7 @@ void InitializeHAL() {
   InitializePWMData();
   InitializeRelayData();
   InitializeRoboRioData();
+  InitializeSimDeviceData();
   InitializeSPIAccelerometerData();
   InitializeSPIData();
   InitializeAccelerometer();
@@ -69,6 +70,7 @@ void InitializeHAL() {
   InitializePWM();
   InitializeRelay();
   InitializeSerialPort();
+  InitializeSimDevice();
   InitializeSolenoid();
   InitializeSPI();
   InitializeThreads();