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

Renombrats alguns fitxers per consistencia

source/define_buttons.h

@@ -1,9 +1,11 @@
 #pragma once
 
-#include <SDL2/SDL.h>
-#include "input.h"
-#include "text.h"
-#include "lang.h"
+#include <SDL2/SDL_events.h>          // for SDL_ControllerButtonEvent
+#include <SDL2/SDL_gamecontroller.h>  // for SDL_GameControllerButton
+#include <string>                     // for string, basic_string
+#include <vector>                     // for vector
+#include "input.h"                    // for inputs_e
+class Text;
 
 struct db_button_t
 {