refactor: restructure lidarlib into xlidar-driver plugin SDK

- LidarManager facade (liblidar_manager.so): dlopen plugin discovery,
  available_drivers map<driver_id, PluginRegistry>, create_lidar_device,
  config.json load/save with legacy lidarlib migration
- Common LidarDriverInterface + DriverInfo/DeviceConfig plugin ABI
  (extern C get_driver_info / create_driver_instance)
- Plugins: driver_rplidar (ported from xlocd, Slamtec SDK), driver_olei,
  driver_sick_code (TiM CoLa-A), driver_sick_safety (nanoScan3), driver_espe
- Diagnostics extended with rplidar health + firmware; FOV filter window,
  range override and legacy remap window unified in DeviceConfig
- Rewritten README, diagnostics doc and examples (list_drivers, example,
  lidar_app)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

config.json

@@ -1 +1 @@
-{"lidars":[{"name":"sonle","ip":"192.168.100.100","port":2368,"brand":"OLEI","model":"AUTO","inverted":false},{"name":"sonpham","ip":"192.168.100.100","port":2371,"brand":"OLEI","model":"AUTO","inverted":true},{"name":"minhtt","ip":"192.168.100.22","port":2111,"brand":"SICK","model":"SICK-TIM7xx","inverted":false}]}
+{"lidars":[{"name":"front","driver_id":"olei_lidar_driver","model":"AUTO","ip":"192.168.100.100","port":2368,"inverted":false},{"name":"rear","driver_id":"olei_lidar_driver","model":"AUTO","ip":"192.168.100.100","port":2371,"inverted":true},{"name":"sick1","driver_id":"sick_tim_driver","model":"SICK-TIM7xx","ip":"192.168.100.22","port":2111,"inverted":false},{"name":"rp1","driver_id":"rplidar_c1_driver","model":"AUTO","serial_port":"/dev/ttyUSB0","baudrate":460800,"inverted":false}]}