fix: add maybe_unused

[atsushi421]

Description

agnocast適用Autowareで error: unused parameter ‘node’ [-Werror=unused-parameter] のエラーが出ないように修正しました。

Related links

https://star4.slack.com/archives/C07FL8616EM/p1736316546129739

How was this PR tested?

• sample application (required)
• Autoware (required) -> ビルドエラーが出ないことを確認

Notes for reviewers

[github-actions]

------------------------------------------------------------------------------
                           GCC Code Coverage Report
Directory: .
------------------------------------------------------------------------------
File                                       Lines    Exec  Cover   Missing
------------------------------------------------------------------------------
src/agnocastlib/include/agnocast.hpp           2       2   100%   
src/agnocastlib/include/agnocast_executor.hpp
                                               1       0     0%   38
src/agnocastlib/include/agnocast_publisher.hpp
                                              24      19    79%   70-71,80-82
src/agnocastlib/include/agnocast_smart_pointer.hpp
                                              53      50    94%   77,80-81
src/agnocastlib/include/agnocast_topic_info.hpp
                                              13      13   100%   
src/agnocastlib/src/agnocast.cpp              82      15    18%   22,24,27,30,32-34,36,39,42,44-50,54-55,58-62,66-67,71-74,77,80,82-85,88,91,93-94,96-97,102,104-106,109-112,115,117-123,125,138-139,150-151,154-156,161
src/agnocastlib/src/agnocast_component_container.cpp
                                              12       0     0%   5,7-8,11-13,16,18-20,22-23
src/agnocastlib/src/agnocast_component_container_mt.cpp
                                              28       0     0%   7,11-12,14-16,18-20,22-24,26-28,30,32-33,35-37,40,42,44-46,48-49
src/agnocastlib/src/agnocast_executor.cpp
                                              86       0     0%   10,12,14-16,18-20,24,26,29,31-32,35-39,42-45,47-48,51-53,55-58,61-62,67,70,73,75-79,82,86-87,90-91,94,96-100,103,106,110-115,118,121-124,126-129,132,135-137,140,142,145,149-150,153-156,159,162,164-165
src/agnocastlib/src/agnocast_multi_threaded_executor.cpp
                                              51       0     0%   9,13,15-17,19-20,25-26,29-33,36,38-41,44,48,51,53-55,58-60,64,66-67,71,74,77,79-80,82-83,87-88,91,96,100,103-104,107,114-117,120
src/agnocastlib/src/agnocast_publisher.cpp
                                              73       0     0%   5,7,9-15,19-20,27,32,34-39,42-49,54,58-65,68-69,71-74,76-79,81,84-85,89-90,96,100-109,112-113,116,119,121-126,129
src/agnocastlib/src/agnocast_single_threaded_executor.cpp
                                              19       0     0%   10-12,16,18-21,24,28-30,33,35-37,40-42
src/agnocastlib/src/agnocast_smart_pointer.cpp
                                              20       0     0%   5,7-15,19,21-29
src/agnocastlib/src/agnocast_subscription.cpp
                                              90       9    10%   10-12,14,17,21,24-26,28,30,32,34-39,41-46,48,51-58,61-64,66,68,71,74,78-81,83-89,92-93,100,105,107-110,113,116,120-125,127-132,134,136,139,143-144,146-147
src/agnocastlib/src/agnocast_topic_info.cpp
                                              16       0     0%   12,16-17,20-24,28-31,34-37
src/agnocastlib/src/agnocast_utils.cpp        25      23    92%   48,50
------------------------------------------------------------------------------
TOTAL                                        595     131    22%
------------------------------------------------------------------------------