feat(freespace_planning_algorithms): add is_back flag into the return of A* python wrapper

[TakumIto]

Description

This is an updated version of the A* python wrapper

The previous version does not have is_back in the result return of A* search. I append it with this PR.

Related links

#6398
Evaluator: https://evaluation.tier4.jp/evaluation/reports/54647b99-62d4-5849-b6f8-d7d78de25c8c?project_id=prd_jt

Interface changes

ROS Topic Changes

N/A

ROS Parameter Changes

N/A

Effects on system behavior

This feature is independent of the main autoware features. There are no effects.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 28.66%. Comparing base (909004e) to head (f618b13).
Report is 11 commits behind head on main.

Files	Patch %	Lines
...ng_algorithms/scripts/bind/astar_search_pybind.cpp	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7831      +/-   ##
==========================================
- Coverage   28.68%   28.66%   -0.02%     
==========================================
  Files        1587     1593       +6     
  Lines      116304   116349      +45     
  Branches    49652    49653       +1     
==========================================
  Hits        33356    33356              
- Misses      73892    73937      +45     
  Partials     9056     9056              

Flag	Coverage Δ		*Carryforward flag
differential	15.40% <0.00%> (?)
total	28.68% <ø> (+<0.01%)	⬆️	Carriedforward from 909004e

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