feat: adaptation to ROS nodes guidelines about directory structure (#272)

Signed-off-by: NorahXiong <norah.xiong@autocore.ai>

Author: NorahXiong

planning/autoware_path_generator/test/test_path_generator_node_interface.cpp

@@ -15,7 +15,7 @@
 #include "../src/node.hpp"
 
 #include <ament_index_cpp/get_package_share_directory.hpp>
-#include <autoware_planning_test_manager/autoware_planning_test_manager.hpp>
+#include <autoware/planning_test_manager/autoware_planning_test_manager.hpp>
 #include <autoware_test_utils/autoware_test_utils.hpp>
 
 #include <autoware_internal_planning_msgs/msg/path_with_lane_id.hpp>

testing/autoware_planning_test_manager/include/autoware_planning_test_manager/autoware_planning_test_manager.hpp

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "autoware_planning_test_manager/autoware_planning_test_manager.hpp"
+#include "autoware/planning_test_manager/autoware_planning_test_manager.hpp"
 
 #include <autoware/motion_utils/trajectory/conversion.hpp>