refactor(motion_velocity_smoother): align processing time topic name

[satoshi-ota]

Description

🤖 Generated by Copilot at 0f724cc

Refactored the motion velocity smoother node to improve performance and readability. Renamed the topic for publishing the processing time to ~/debug/processing_time_ms.

Tests performed

➜  pilot-auto git:(awf-latest) ✗ ros2 topic echo /planning/scenario_planning/motion_velocity_smoother/debug/processing_time_ms                                                                                                                                                                                                                                                                                                  
stamp:                                                                                                                                                                                                                                                                                                                                                                                                                          
  sec: 1697073393                                                                                                                                                                                                                                                                                                                                                                                                               
  nanosec: 735140327                                                                                    
data: 12.781999588012695                                                                                
---                                                                                                     
stamp:                                                                                                  
  sec: 1697073393                                                                                       
  nanosec: 882572164                                                                                    
data: 10.720999717712402                                                                                
---                                                                                                     
stamp:                                                                                                  
  sec: 1697073393                                                                                       
  nanosec: 931832309                                                                                    
data: 9.756999969482422                

Effects on system behavior

Not applicable.

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[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (dc8cc07) 14.84% compared to head (0f724cc) 14.82%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5273      +/-   ##
==========================================
- Coverage   14.84%   14.82%   -0.02%     
==========================================
  Files        1649     1649              
  Lines      114166   114289     +123     
  Branches    35322    35420      +98     
==========================================
  Hits        16943    16943              
- Misses      78102    78216     +114     
- Partials    19121    19130       +9     

Flag	Coverage Δ		*Carryforward flag
differential	11.32% <0.00%> (?)
total	14.84% <ø> (+<0.01%)	⬆️	Carriedforward from dc8cc07

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

Files	Coverage Δ
...ity_smoother/src/motion_velocity_smoother_node.cpp	28.23% <0.00%> (ø)

... and 1 file with indirect coverage changes

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