Add 16x16 tile rendering and modification functions

- Introduced RenderTile16 and UpdateTile16 functions for rendering and updating 16x16 tiles in the Tilemap.
- Added ModifyTile16 function to facilitate the composition and placement of tile parts within the Tilemap.
- Updated Tilemap structure to include a vector for storing tile information.
- Refactored related functions to enhance tile handling and rendering capabilities.

src/app/gfx/tilemap.h

@@ -1,9 +1,9 @@
 #ifndef YAZE_GFX_TILEMAP_H
 #define YAZE_GFX_TILEMAP_H
 
+#include "absl/container/flat_hash_map.h"
 #include "app/gfx/bitmap.h"
 #include "app/gfx/snes_tile.h"
-#include "absl/container/flat_hash_map.h"
 
 namespace yaze {
 namespace gfx {
@@ -16,10 +16,14 @@ struct Pair {
 struct Tilemap {
   Bitmap atlas;
   absl::flat_hash_map<int, Bitmap> tile_bitmaps;
+  std::vector<std::array<gfx::TileInfo, 4>> tile_info;
   Pair tile_size;
   Pair map_size;
 };
 
+std::vector<uint8_t> FetchTileDataFromGraphicsBuffer(
+    const std::vector<uint8_t> &data, int tile_id, int sheet_offset);
+
 Tilemap CreateTilemap(std::vector<uint8_t> &data, int width, int height,
                       int tile_size, int num_tiles, SnesPalette &palette);
 
@@ -27,6 +31,14 @@ void UpdateTilemap(Tilemap &tilemap, const std::vector<uint8_t> &data);
 
 void RenderTile(Tilemap &tilemap, int tile_id);
 
+void RenderTile16(Tilemap &tilemap, int tile_id);
+void UpdateTile16(Tilemap &tilemap, int tile_id);
+
+void ModifyTile16(Tilemap &tilemap, const std::vector<uint8_t> &data,
+                   const TileInfo &top_left, const TileInfo &top_right,
+                   const TileInfo &bottom_left, const TileInfo &bottom_right,
+                   int sheet_offset, int tile_id);
+
 void ComposeTile16(Tilemap &tilemap, const std::vector<uint8_t> &data,
                    const TileInfo &top_left, const TileInfo &top_right,
                    const TileInfo &bottom_left, const TileInfo &bottom_right,