New cpp folder structure

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

libs/base/suffix_array.hpp

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <cstdint>
+#include <string>
+#include <vector>
+
+namespace base
+{
+// Builds suffix array for the string |s| and stores result in the
+// |sa| array. Size of |sa| must be not less than |n|.
+//
+// Complexity: O(n) time and O(n) memory.
+void Skew(size_t n, uint8_t const * s, size_t * sa);
+void Skew(std::string const & s, std::vector<size_t> & sa);
+}  // namespace base