New cpp folder structure

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

tools/topography_generator/utils/values_provider.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "geometry/latlon.hpp"
+
+namespace topography_generator
+{
+template <typename ValueType>
+class ValuesProvider
+{
+public:
+  virtual ~ValuesProvider() = default;
+
+  virtual ValueType GetValue(ms::LatLon const & pos) = 0;
+  virtual ValueType GetInvalidValue() const = 0;
+};
+}  // namespace topography_generator