Enable vehicle HAL to be controlled via ADB

Add emulator functionality to DefaultVehicleHal:

- Create default list of properties based upon DefaultConfig.h
- Add socket that is reachable via ADB to set/get vehicle properties.

BUG: 29601815
Test: Tested with Python interface from host.
Change-Id: I6f8e4cba37d927565e10797875eb8f5a1840a94f
5 files changed