Add Arena class for texture and surface management in graphics module

Introduce the Arena class to manage a collection of SDL textures and surfaces, providing methods for allocation, deallocation, and updating textures.

src/app/gfx/arena.h

@@ -0,0 +1,57 @@
+#ifndef YAZE_APP_GFX_ARENA_H
+#define YAZE_APP_GFX_ARENA_H
+
+#include <array>
+#include <cstdint>
+#include <memory>
+#include <unordered_map>
+
+#include "app/core/platform/sdl_deleter.h"
+#include "app/gfx/background_buffer.h"
+
+namespace yaze {
+namespace gfx {
+
+// Arena is a class that manages a collection of textures and surfaces
+class Arena {
+ public:
+  static Arena& Get();
+
+  ~Arena();
+
+  SDL_Texture* AllocateTexture(SDL_Renderer* renderer, int width, int height);
+  void FreeTexture(SDL_Texture* texture);
+  void UpdateTexture(SDL_Texture* texture, SDL_Surface* surface);
+
+  SDL_Surface* AllocateSurface(int width, int height, int depth, int format);
+  void FreeSurface(SDL_Surface* surface);
+
+  auto& bg1() { return bg1_; }
+  auto& bg2() { return bg2_; }
+
+ private:
+  Arena();
+
+  BackgroundBuffer bg1_;
+  BackgroundBuffer bg2_;
+
+  static constexpr int kTilesPerRow = 64;
+  static constexpr int kTilesPerColumn = 64;
+  static constexpr int kTotalTiles = kTilesPerRow * kTilesPerColumn;
+
+  std::array<uint16_t, kTotalTiles> layer1_buffer_;
+  std::array<uint16_t, kTotalTiles> layer2_buffer_;
+
+  std::unordered_map<SDL_Texture*,
+                     std::unique_ptr<SDL_Texture, core::SDL_Texture_Deleter>>
+      textures_;
+
+  std::unordered_map<SDL_Surface*,
+                     std::unique_ptr<SDL_Surface, core::SDL_Surface_Deleter>>
+      surfaces_;
+};
+
+}  // namespace gfx
+}  // namespace yaze
+
+#endif  // YAZE_APP_GFX_ARENA_H