refactor(gfx): reorganize graphics includes and introduce new types

- Updated include paths for various graphics-related headers to improve organization and clarity.
- Introduced new types for SNES color, palette, and tile management, enhancing the structure of the graphics subsystem.
- Refactored existing code to utilize the new types, ensuring consistency across the codebase.

Benefits:
- Improves maintainability and readability of the graphics code.
- Facilitates future enhancements and optimizations within the graphics subsystem.

src/app/gui/canvas/canvas_utils.cc

@@ -1,8 +1,8 @@
 #include "canvas_utils.h"
 
 #include <cmath>
-#include "app/gfx/arena.h"
-#include "app/gfx/snes_palette.h"
+#include "app/gfx/resource/arena.h"
+#include "app/gfx/types/snes_palette.h"
 #include "util/log.h"
 
 namespace yaze {