啟動 SLAM

1st terminal
- source /opt/ros/noetic/setup.bash
- source ~/neuronbot2_ros1_ws/devel/setup.bash
- roslaunch rplidar_ros view_rplidar_s1.launch
  - or this command(doesn't open rviz, just start rplidar)
    - roslaunch rplidar_ros rplidar_s1.launch
2nd terminal
- source /opt/ros/noetic/setup.bash
- source ~/neuronbot2_ros1_ws/devel/setup.bash
- roslaunch hector_slam_launch tutorial.launch

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