fix(behavior_path_planner): move findEgoIndex & findEgoSegmentIndex to planner data

[satoshi-ota]

Description

move duplicated function (findEgoIndex, findEgoSegmentIndex) to planner data

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[codecov]

Codecov Report

Base: 11.79% // Head: 11.72% // Decreases project coverage by -0.07% ⚠️

Coverage data is based on head (f6fafa1) compared to base (e161141).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2912      +/-   ##
==========================================
- Coverage   11.79%   11.72%   -0.07%     
==========================================
  Files        1322     1328       +6     
  Lines       92793    93340     +547     
  Branches    24997    25245     +248     
==========================================
  Hits        10945    10945              
- Misses      70375    70922     +547     
  Partials    11473    11473              

Flag	Coverage Δ		*Carryforward flag
differential	6.16% <0.00%> (?)
total	11.79% <ø> (+<0.01%)	⬆️	Carriedforward from e161141

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

Impacted Files	Coverage Δ
control/vehicle_cmd_gate/src/vehicle_cmd_gate.cpp	0.31% <ø> (+<0.01%)	⬆️
control/vehicle_cmd_gate/src/vehicle_cmd_gate.hpp	0.00% <ø> (ø)
...havior_path_planner/behavior_path_planner_node.hpp	0.00% <ø> (ø)
...ner/include/behavior_path_planner/data_manager.hpp	0.00% <0.00%> (ø)
.../include/behavior_path_planner/debug_utilities.hpp	0.00% <ø> (ø)
...lanner/scene_module/avoidance/avoidance_module.hpp	0.00% <0.00%> (ø)
...r/scene_module/avoidance/avoidance_module_data.hpp	0.00% <ø> (ø)
...er/scene_module/lane_change/lane_change_module.hpp	0.00% <ø> (ø)
...anner/scene_module/pull_out/geometric_pull_out.hpp	0.00% <ø> (ø)
..._planner/scene_module/pull_out/pull_out_module.hpp	0.00% <ø> (ø)
... and 21 more

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