refactor(behavior_path_planner_common): remove unused headers

[zulfaqar-azmi-t4]

Description

Remove unused headers or replace it with more specific ones.
Also add very very very slight clang-tidy refactoring.
I also didn't do it on other modules yet.

Tests performed

Not applicable.

Effects on system behavior

Not applicable.

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[satoshi-ota]

LGTM 👍

[codecov]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (c9b9fca) 15.29% compared to head (2ea325d) 15.29%.
Report is 16 commits behind head on main.

Files	Patch %	Lines
...avior_path_planner_common/src/utils/path_utils.cpp	0.00%	5 Missing ⚠️
...s/parking_departure/geometric_parallel_parking.cpp	0.00%	4 Missing ⚠️
...ior_path_planner_common/src/marker_utils/utils.cpp	33.33%	1 Missing and 1 partial ⚠️
.../utils/drivable_area_expansion/path_projection.hpp	66.66%	0 Missing and 1 partial ⚠️
...common/src/interface/steering_factor_interface.cpp	0.00%	1 Missing ⚠️
...or_path_planner_common/src/turn_signal_decider.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5924   +/-   ##
=======================================
  Coverage   15.29%   15.29%           
=======================================
  Files        1748     1749    +1     
  Lines      120279   120350   +71     
  Branches    36673    36656   -17     
=======================================
+ Hits        18399    18410   +11     
- Misses      81247    81330   +83     
+ Partials    20633    20610   -23     

Flag	Coverage Δ		*Carryforward flag
differential	11.75% <17.64%> (?)
total	15.30% <ø> (+<0.01%)	⬆️	Carriedforward from c9b9fca

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

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