feat(editor): far out the top view shows the base map of OpenStreetMap from geoportal.gov.pl in place of the imagery, tiles as large as the view needs, the ground not drawn under it nor streamed as far as the view; the tracks over it in the colour of the rails, blue by default, and the joints of the pieces left out far out

editor/editorSettings.hpp

@@ -90,7 +90,7 @@ private:
 	bool m_terrain_offer{true};
 	bool m_track_tools_more{false};
 	int m_top_tracks{0}; // the railway in the top view: whole, without the ballast, the rails alone
-	std::uint32_t m_top_rails{0xffd246ff}; // colour of the rails alone, as ImGui keeps it: ABGR
+	std::uint32_t m_top_rails{0xffff6e28}; // colour of the rails alone, as ImGui keeps it: ABGR
 	track_norms m_norms{track_norms::ask};
 };