New cpp folder structure

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

libs/search/dummy_rank_table.cpp

@@ -0,0 +1,25 @@
+#include "search/dummy_rank_table.hpp"
+
+#include "base/macros.hpp"
+
+namespace search
+{
+uint8_t DummyRankTable::Get(uint64_t /* i */) const { return kNoRank; }
+
+uint64_t DummyRankTable::Size() const
+{
+  NOTIMPLEMENTED();
+  return 0;
+}
+
+RankTable::Version DummyRankTable::GetVersion() const
+{
+  NOTIMPLEMENTED();
+  return RankTable::VERSION_COUNT;
+}
+
+void DummyRankTable::Serialize(Writer &)
+{
+  NOTIMPLEMENTED();
+}
+}  // namespace search