Adding a new command line option osrm-extract --with-osm-metadata

This keep the metadata reader flag disabled by default unless explicitly specified.

Signed-off-by: FILLAU Jean-Maxime <jean-maxime.fillau@mapotempo.com>

src/extractor/extractor.cpp

@@ -130,7 +130,11 @@ int Extractor::run(ScriptingEnvironment &scripting_environment)
         auto extractor_callbacks = std::make_unique<ExtractorCallbacks>(extraction_containers);
 
         const osmium::io::File input_file(config.input_path.string());
-        osmium::io::Reader reader(input_file, osmium::io::read_meta::no);
+
+        osmium::io::Reader reader(
+            input_file,
+            (config.use_metadata ? osmium::io::read_meta::yes : osmium::io::read_meta::no));
+
         const osmium::io::Header header = reader.header();
 
         unsigned number_of_nodes = 0;