Pasaeta de "include-what-you-use" per arreglar els includes

Renombrats alguns fitxers per consistencia

source/item.h

@@ -1,8 +1,12 @@
 #pragma once
 
-#include <SDL2/SDL.h>
-#include "animatedsprite.h"
-#include "utils.h"
+#include <SDL2/SDL_rect.h>    // for SDL_Rect
+#include <SDL2/SDL_stdinc.h>  // for Uint16
+#include <string>             // for string
+#include <vector>             // for vector
+#include "utils.h"            // for circle_t
+class AnimatedSprite;
+class Texture;
 
 // Tipos de objetos
 #define ITEM_POINTS_1_DISK 1