move IMU integration out of drivers to sensors hub to handle accel/gyro sync

- IMU integration move from drivers (PX4Accelerometer/PX4Gyroscope) to sensors/vehicle_imu 
 - sensors: voted_sensors_update now consumes vehicle_imu
 - delete sensor_accel_integrated, sensor_gyro_integrated
 - merge sensor_accel_status/sensor_gyro_status into vehicle_imu_status
 - sensors status output minor improvements (ordering, whitespace, show selected sensor device id and instance)

src/modules/sensors/vehicle_air_data/VehicleAirData.cpp

@@ -278,6 +278,5 @@ void VehicleAirData::PrintStatus()
 		PX4_INFO("selected barometer: %d (%d)", _last_data[_selected_sensor_sub_index].device_id, _selected_sensor_sub_index);
 	}
 
-	perf_print_counter(_cycle_perf);
 	_voter.print();
 }