Adding launch file to lpe folder

posix-configs/SITL/init/lpe/hippocampus

+uorb start
+param load
+param set MAV_TYPE 3
+param set SYS_AUTOSTART 4010
+param set SYS_RESTART_TYPE 2
+param set COM_DISARM_LAND 0
+dataman start
+param set CAL_GYRO0_ID 2293768
+param set CAL_ACC0_ID 1376264
+param set CAL_ACC1_ID 1310728
+param set CAL_MAG0_ID 196616
+
+simulator start -s
+
+pwm_out_sim mode_pwm
+mixer load /dev/pwm_output0 ROMFS/px4fmu_test/mixers/uuv_quad_x.mix
+
+gyrosim start
+accelsim start
+barosim start
+adcsim start
+
+sleep 1
+
+sensors start
+commander start
+
+attitude_estimator_q start
+
+mavlink start -u 14556 -r 4000000
+mavlink start -u 14557 -r 4000000 -m onboard -o 14540
+mavlink stream -r 50 -s SERVO_OUTPUT_RAW_0 -u 14556
+mavlink stream -r 50 -s ATT_POS_MOCAP -u 14556
+mavlink stream -r 50 -s LOCAL_POSITION_NED -u 14556
+logger start -r 100 -e
+mavlink boot_complete