New cpp folder structure

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

libs/editor/editable_feature_source.hpp

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "indexer/feature.hpp"
+#include "indexer/feature_source.hpp"
+#include "indexer/mwm_set.hpp"
+
+#include "geometry/rect2d.hpp"
+
+#include <cstdint>
+#include <functional>
+#include <memory>
+
+class EditableFeatureSource final : public FeatureSource
+{
+public:
+  explicit EditableFeatureSource(MwmSet::MwmHandle const & handle) : FeatureSource(handle) {}
+
+  // FeatureSource overrides:
+  FeatureStatus GetFeatureStatus(uint32_t index) const override;
+  std::unique_ptr<FeatureType> GetModifiedFeature(uint32_t index) const override;
+  void ForEachAdditionalFeature(m2::RectD const & rect, int scale,
+                                std::function<void(uint32_t)> const & fn) const override;
+};
+
+class EditableFeatureSourceFactory : public FeatureSourceFactory
+{
+public:
+  // FeatureSourceFactory overrides:
+  std::unique_ptr<FeatureSource> operator()(MwmSet::MwmHandle const & handle) const override
+  {
+    return std::make_unique<EditableFeatureSource>(handle);
+  }
+};