Downgrade from C++20/C++23 features

[Butakus]

Follow-up to EasyNavigation/EasyNavigation#82.

I also removed some C++20 stuff like std::numbers::pi or std::map::contains().

Hope the CI is green, local tests did pass.

Best.

[fmrico]

LGTM with these changes

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 0% with 24 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...asynav_costmap_maps_manager/CostmapMapsManager.cpp	0.00%	6 Missing ⚠️
.../easynav_navmap_maps_manager/NavMapMapsManager.cpp	0.00%	6 Missing ⚠️
.../easynav_bonxai_maps_manager/BonxaiMapsManager.cpp	0.00%	3 Missing ⚠️
...src/easynav_serest_controller/SerestController.cpp	0.00%	2 Missing ⚠️
...anner/src/easynav_simple_planner/SimplePlanner.cpp	0.00%	2 Missing ⚠️
...r/src/easynav_fusion_localizer/FusionLocalizer.cpp	0.00%	1 Missing ⚠️
...av_costmap_maps_manager/filters/ObstacleFilter.cpp	0.00%	1 Missing ⚠️
...nav_navmap_maps_manager/filters/ObstacleFilter.cpp	0.00%	1 Missing ⚠️
.../easynav_simple_maps_manager/SimpleMapsManager.cpp	0.00%	1 Missing ⚠️
...ner/src/easynav_costmap_planner/CostmapPlanner.cpp	0.00%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[fmrico]

Tested with

Param file	Robot	Sim/Real	World	Sensors	Maps Managers	Localizer	Planner	Controller	Checked
Test3	Kobuki	Sim	House	Laser	Simple	AMCL/Simple	A*/Simple	Simple	✅
Test4	Kobuki	Sim	House	Laser	Costmap (obstacles + inflation)	AMCL/Costmap	A*/Costmap	Serest	✅
Test5	Kobuki	Sim	House	Laser	Costmap (obstacles + inflation) + Routes	AMCL/Costmap	A*/Costmap	MPPI	✅

@Butakus Maybe you should do the same with https://github.com/EasyNavigation/easynav_lidarslam_ros2 and https://github.com/EasyNavigation/easynav_gridmap_stack until we decide to deprecate them in anytime

Merging!!! 🚀