[Main][HIL] Implemented HIL simulation for the Main computer

- Turned all Sensors methods virtual to be overwritten by HILSensors
- Converted the Sensors "private" specifier to protected to allow HILSensors to inherit from it
- Implemented all the overrides in HILSensors to interface with the simulation and remap to the structures of the real sensors
- Modified main-entry to embed the hilSimulationActive flag for enabling the HIL simulation
- Added the pieces of code useful to perform an HIL simulation from the actual main:
   - Usage of Sensors/HILSensors
   - Creation/insertion/starting of the HIL framework
   - Creation of the chain of events necessary to perform a reproducible HIL simulation