New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/editor/feature_matcher.hpp

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "editor/xml_feature.hpp"
+
+#include "geometry/point2d.hpp"
+
+#include <vector>
+
+namespace matcher
+{
+/// Returns a node from OSM closest to the latLon, or an empty node if none is close enough.
+pugi::xml_node GetBestOsmNode(pugi::xml_document const & osmResponse, ms::LatLon const & latLon);
+/// Returns a way from osm with similar geometry or empty node if can't find such way.
+/// Throws NotAPolygon exception when |geometry| is not convertible to a polygon.
+pugi::xml_node GetBestOsmWayOrRelation(pugi::xml_document const & osmResponse,
+                                       std::vector<m2::PointD> const & geometry);
+/// Returns value form [-1, 1]. Negative values are used as penalty, positive as score.
+/// |lhs| and |rhs| - triangulated polygons.
+/// Throws NotAPolygon exception when either lhs or rhs is not convertible to a polygon.
+double ScoreTriangulatedGeometries(std::vector<m2::PointD> const & lhs,
+                                   std::vector<m2::PointD> const & rhs);
+/// Deprecated, use ScoreTriangulatedGeometries instead. In the older versions of the editor, the
+/// edits.xml file didn't contain the necessary geometry information, so we cannot restore the
+/// original geometry of a particular feature and thus can't use the new algo that is dependent on
+/// correct feature geometry to calculate scores.
+// TODO(a): To remove it when version 8.0.x is no longer supported.
+double ScoreTriangulatedGeometriesByPoints(std::vector<m2::PointD> const & lhs,
+                                           std::vector<m2::PointD> const & rhs);
+}  // namespace osm