tot mes ben estructuraet i ara amb gestió d'events, context i subsystems. arreglos en el main loop

source/game/scenes/test.hpp

@@ -6,16 +6,18 @@
 
 #include "scene.hpp"
 
-struct GameContext;
+struct Subsystems;
+struct Context;
 
 class Test final : public Scene {
    public:
-    explicit Test(GameContext& context);
-    auto update(int delta_ms) -> Scenes override;
+    explicit Test(Subsystems& subsystems, Context& context);
+    void update(int delta_ms) override;
     void render() override;
 
    private:
-    GameContext& context_;
+    Subsystems& subsystems_;
+    Context& context_;
     int color_{0};
     Uint64 time_elapsed_{0};
 };