- Update LiDAR point structure definitions in ObTypes.h
- Rename reflectivity field to intensity in OBLiDARPoint and OBLiDARSpherePoint structures
- Update point cloud field names and iterators in ob_lidar_node.cpp
- Modify Chinese documentation to reflect the terminology change
- Ensure consistency across all LiDAR data publishing methods
This change aligns the codebase with standard LiDAR terminology where
'intensity' is the commonly used term for describing the strength of
the laser return signal.
xiexun