chore(map): rework parameters of map (#843)

* Added reference to launch parameters to yaml files of map/

Signed-off-by: anhnv3991 <anh.nguyen.2@tier4.jp>

* style(pre-commit): autofix

---------

Signed-off-by: anhnv3991 <anh.nguyen.2@tier4.jp>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: anhnv3991

autoware_launch/config/map/lanelet2_map_loader.param.yaml

@@ -1,3 +1,4 @@
 /**:
   ros__parameters:
     center_line_resolution: 5.0         # [m]
+    lanelet2_map_path: $(var lanelet2_map_path) # The lanelet2 map path

autoware_launch/config/map/pointcloud_map_loader.param.yaml

@@ -7,3 +7,5 @@
 
     # only used when downsample_whole_load enabled
     leaf_size: 3.0 # downsample leaf size [m]
+    pcd_paths_or_directory: [$(var pointcloud_map_path)] # Path to the pointcloud map file or directory
+    pcd_metadata_path: $(var pointcloud_map_metadata_path) # Path to pointcloud metadata file