CM: Add missing includes

[christophfroehlich]

Since #1627 (?) the build fails on debian11 (not part of the rolling-CI):

#23 268.5 /opt/ros2_ws/src/ros-controls/ros2_control/controller_manager/src/controller_manager.cpp: In member function ‘void controller_manager::ControllerManager::list_controllers_srv_cb(std::shared_ptr<controller_manager_msgs::srv::ListControllers_Request_<std::allocator<void> > >, std::shared_ptr<controller_manager_msgs::srv::ListControllers_Response_<std::allocator<void> > >)’:
#23 268.5 /opt/ros2_ws/src/ros-controls/ros2_control/controller_manager/src/controller_manager.cpp:1705:40: error: ‘set’ is not a member of ‘std’
#23 268.5  1705 |   std::unordered_map<std::string, std::set<std::string>> controller_chain_map;
#23 268.5       |                                        ^~~
#23 268.5 /opt/ros2_ws/src/ros-controls/ros2_control/controller_manager/src/controller_manager.cpp:24:1: note: ‘std::set’ is defined in header ‘<set>’; did you forget to ‘#include <set>’?

--- stderr: controller_manager                                        
/opt/ros2_ws/src/ros-controls/ros2_control/controller_manager/src/ros2_control_node.cpp: In function ‘int main(int, char**)’:
/opt/ros2_ws/src/ros-controls/ros2_control/controller_manager/src/ros2_control_node.cpp:39:30: error: ‘executors’ is not a member of ‘rclcpp’; did you mean ‘Executor’?
   39 |     std::make_shared<rclcpp::executors::MultiThreadedExecutor>();
      |                              ^~~~~~~~~
      |                              Executor

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.95%. Comparing base (872029c) to head (b1ac872).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1641   +/-   ##
=======================================
  Coverage   87.95%   87.95%           
=======================================
  Files         108      108           
  Lines        9913     9913           
  Branches      889      889           
=======================================
  Hits         8719     8719           
  Misses        875      875           
  Partials      319      319           

Flag	Coverage Δ
unittests	87.95% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
controller_manager/src/controller_manager.cpp	77.21% <ø> (ø)
controller_manager/src/ros2_control_node.cpp	92.59% <ø> (ø)

[saikishor]

Thanks for fixing it

[bmagyar]

Thank you!