feat(motion_utils): add guard

[purewater0901]

Signed-off-by: yutaka purewater0901@gmail.com

Description

Currently, resampling functions in motion utils do not have guards to prevent them from inserting the same points in input arclength. In this PR, I add a guard to enable the resampling function to avoid having same points.

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[taikitanaka3]

LGTM

[taikitanaka3]

@purewater0901
can you fix unit test?

[codecov]

Codecov Report

Merging #1666 (9da02b6) into main (a8a58c0) will increase coverage by 0.44%.
The diff coverage is 32.35%.

@@            Coverage Diff             @@
##             main    #1666      +/-   ##
==========================================
+ Coverage   10.73%   11.17%   +0.44%     
==========================================
  Files        1103     1103              
  Lines       78356    79418    +1062     
  Branches    18649    19577     +928     
==========================================
+ Hits         8409     8877     +468     
- Misses      61033    61317     +284     
- Partials     8914     9224     +310     

Flag	Coverage Δ		*Carryforward flag
differential	10.77% <9.15%> (?)
total	10.70% <29.49%> (-0.01%)	⬇️	Carriedforward from 920ae85

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

Impacted Files	Coverage Δ
...n/motion_utils/test/src/resample/test_resample.cpp	34.74% <31.25%> (+8.73%)	⬆️
common/motion_utils/src/resample/resample.cpp	50.54% <33.33%> (+5.28%)	⬆️
...vehicle_model/sim_model_ideal_steer_acc_geared.cpp	73.58% <0.00%> (-9.44%)	⬇️
planning/surround_obstacle_checker/src/node.cpp	0.00% <0.00%> (ø)
...ing/surround_obstacle_checker/src/debug_marker.cpp	0.00% <0.00%> (ø)
...city_planner/src/scene_module/blind_spot/scene.cpp	0.00% <0.00%> (ø)

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