feat(title): game_logo.gif al lloc del text i font PixeloidSans-Bold per al copyright

source/core/system/director.hpp

@@ -30,8 +30,9 @@ class Director {
     // escena. No són `static`/Meyers perquè depenen de l'inici d'SDL i
     // de Resource::Cache.
     std::shared_ptr<Text> placeholder_text_;
-    std::shared_ptr<Text> menu_title_text_;
+    std::shared_ptr<Text> copyright_text_;
     std::shared_ptr<Surface> title_bg_surface_;
+    std::shared_ptr<Surface> game_logo_surface_;
     std::shared_ptr<Surface> mini_logo_surface_;
     std::shared_ptr<Surface> logo_full_surface_;