Major refactor of HoTT drivers and finished sensor read implementation.

src/drivers/hott/comms.cpp

src/drivers/hott/hott_sensors/hott_sensors.cpp

src/drivers/hott/hott_sensors/module.mk

src/drivers/hott/hott_telemetry/hott_telemetry.cpp

src/drivers/hott/hott_telemetry/module.mk

src/drivers/hott/messages.cpp

src/drivers/hott/messages.h

src/modules/uORB/topics/esc_status.h