add param for filtering predicted paths by confidence

Signed-off-by: Maxime CLEMENT <maxime.clement@tier4.jp>

autoware_launch/config/planning/scenario_planning/lane_driving/motion_planning/motion_velocity_planner/run_out.param.yaml

@@ -29,3 +29,6 @@
         minimum_velocity: 0.5  # [m/s] objects lower than this velocity will be ignored
         predicted_path_min_confidence : 0.1  # when using predicted paths, ignore the ones whose confidence is lower than this value.
         ignore_on_crosswalk: true # if true, collisions happening on crosswalks are ignored
+        confidence_filtering:
+          threshold: 0.0  # [-]
+          only_use_highest: true  # if true, only the path(s) with the highest confidence are used