Replace boost::filesystem with std (#6432)

include/engine/datafacade/contiguous_internalmem_datafacade.hpp

@@ -177,7 +177,7 @@ class ContiguousInternalMemoryDataFacadeBase : public BaseDataFacade
 
     SharedRTree m_static_rtree;
     std::unique_ptr<SharedGeospatialQuery> m_geospatial_query;
-    boost::filesystem::path file_index_path;
+    std::filesystem::path file_index_path;
 
     std::optional<extractor::IntersectionBearingsView> intersection_bearings_view;
 

include/engine/engine_config.hpp

@@ -31,8 +31,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "storage/storage_config.hpp"
 #include "osrm/datasets.hpp"
 
-#include <boost/filesystem/path.hpp>
-
+#include <filesystem>
 #include <set>
 #include <string>
 
@@ -83,7 +82,7 @@ struct EngineConfig final
     boost::optional<double> default_radius = -1.0;
     int max_alternatives = 3; // set an arbitrary upper bound; can be adjusted by user
     bool use_shared_memory = true;
-    boost::filesystem::path memory_file;
+    std::filesystem::path memory_file;
     bool use_mmap = true;
     Algorithm algorithm = Algorithm::CH;
     std::vector<storage::FeatureDataset> disable_feature_dataset;