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/editor/dungeon/dungeon_object_selector.h

@@ -6,7 +6,7 @@
 // object_renderer.h removed - using ObjectDrawer for production rendering
 #include "zelda3/dungeon/dungeon_object_editor.h"
 #include "zelda3/dungeon/dungeon_editor_system.h"
-#include "app/gfx/snes_palette.h"
+#include "app/gfx/types/snes_palette.h"
 #include "imgui/imgui.h"
 
 namespace yaze {