add new planning diagnostic path

Signed-off-by: mohammad alqudah <alqudah.mohammad@tier4.jp>

Author: mkquda

Diff for: autoware_launch/config/system/diagnostics/planning.yaml

@@ -23,6 +23,7 @@ units:
       - { type: link, link: /autoware/planning/trajectory_validation/steering }
       - { type: link, link: /autoware/planning/trajectory_validation/steering_rate }
       - { type: link, link: /autoware/planning/trajectory_validation/velocity_deviation }
+      - { type: link, link: /autoware/planning/trajectory_validation/trajectory_shift }
 
   - path: /autoware/planning/routing/state
     type: diag
@@ -88,3 +89,8 @@ units:
     type: diag
     node: planning_validator
     name: trajectory_validation_velocity_deviation
+
+  - path: /autoware/planning/trajectory_validation/trajectory_shift
+    type: diag
+    node: planning_validator
+    name: trajectory_validation_trajectory_shift