feat(autoware_tracker_object_merger): add diagnostics

[MasatoSaeki]

Description

Add diagnostics to judge following case.

• main msg(e.g. lidar) is delay
• main msg(e.g. lidar) continues to be empty
• sub msg(e.g. radar) is delay

Related links

autowarefoundation/autoware_launch#1357

Parent Issue:

• Link

How was this PR tested?

https://evaluation.ci.tier4.jp/evaluation/reports/e019a2e3-0b9e-50f6-a238-abb79d8148a0?project_id=prd_jt

I checked certain rosbag w/o radar msg.

Screencast.from.03-12-2025.04.59.34.PM.webm

ros2 launch autoware_launch logging_simulator.launch.xml \
        map_path:=$MAP_PATH \
        pointcloud_map_file:=$MAP_PCD_FILE \
        vehicle_model:=$VEHICLE_MODEL \
        sensor_model:=$SENSOR_MODEL \
        vehicle_id:=$VEHICLE_ID \
        vehicle:=true \
        system:=true \
        map:=true \
        sensing:=true \
        perception:=true \
        localization:=false \
        planning:=false \
        control:=false \
        perception_mode:=camera_lidar_radar_fusion

ros2 bag play hogehoge --clock

ros2 run rqt_runtime_monitor rqt_runtime_monitor

Notes for reviewers

None.

Interface changes

Change type	Topic Type	Topic Name	Message Type	Description
Added	Pub	/diagnostics	diagnostic_msgs/msg/DiagnosticArray	Topic description

Effects on system behavior

None.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 52 lines in your changes missing coverage. Please review.

Project coverage is 26.17%. Comparing base (429bc34) to head (3d08b54).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...ject_merger/src/decorative_tracker_merger_node.cpp	0.00%	52 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10257      +/-   ##
==========================================
+ Coverage   25.64%   26.17%   +0.52%     
==========================================
  Files        1362     1378      +16     
  Lines      104703   107627    +2924     
  Branches    39820    41480    +1660     
==========================================
+ Hits        26856    28174    +1318     
- Misses      75239    76627    +1388     
- Partials     2608     2826     +218     

Flag	Coverage Δ		*Carryforward flag
differential	0.00% <0.00%> (?)
differential-cuda	0.00% <0.00%> (?)
total	26.22% <ø> (+0.57%)	⬆️	Carriedforward from a9f3717

*This pull request uses carry forward flags. Click here to find out more.

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[technolojin]

LGTM

[technolojin]

LGTM