New cpp folder structure

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

libs/drape/cpu_buffer.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "drape/buffer_base.hpp"
+
+#include <memory>
+#include <vector>
+
+namespace dp
+{
+class CPUBuffer : public BufferBase
+{
+  using TBase = BufferBase;
+public:
+  CPUBuffer(uint8_t elementSize, uint32_t capacity);
+  ~CPUBuffer() override;
+
+  void UploadData(void const * data, uint32_t elementCount);
+  // Set memory cursor on element with number == "elementNumber"
+  // Element numbers start from 0
+  void Seek(uint32_t elementNumber) override;
+  // Check function. In real world use must use it only in assert
+  uint32_t GetCurrentElementNumber() const;
+  unsigned char const * Data() const;
+
+private:
+  unsigned char * NonConstData();
+  unsigned char * GetCursor() const;
+
+  unsigned char * m_memoryCursor;
+  std::shared_ptr<std::vector<unsigned char>> m_memory;
+};
+}  // namespace dp