feat(obstacle_avoidance_planner): parameterize bounds search widths

[takayuki5168]

Description

Just set bounds_search_widths as a ros parameter, which will be different depending on the vehicle size

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[codecov]

Codecov Report

Merging #807 (73c6a9d) into main (7919b56) will decrease coverage by 0.04%.
The diff coverage is 0.00%.

@@           Coverage Diff            @@
##            main    #807      +/-   ##
========================================
- Coverage   9.63%   9.58%   -0.05%     
========================================
  Files        907     907              
  Lines      56544   56810     +266     
  Branches    6694    6694              
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  Hits        5448    5448              
- Misses     46601   46867     +266     
  Partials    4495    4495              

Flag	Coverage Δ		*Carryforward flag
differential	0.00% <0.00%> (?)
total	9.63% <0.00%> (ø)		Carriedforward from 7919b56

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Impacted Files	Coverage Δ
...lude/obstacle_avoidance_planner/common_structs.hpp	0.00% <ø> (ø)
...g/obstacle_avoidance_planner/src/mpt_optimizer.cpp	0.00% <0.00%> (ø)
planning/obstacle_avoidance_planner/src/node.cpp	0.00% <0.00%> (ø)

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[kosuke55]

LGTM

[kosuke55]

I also confirmed that the parameters are reflected with tier4/autoware_launch#295
ros2 param dump --print /planning/scenario_planning/lane_driving/motion_planning/obstacle_avoidance_planner