Add scene stack menu flow and restore stable TFT sync refresh

lib/scene_stack.h

@@ -0,0 +1,45 @@
+#ifndef SCENE_STACK_H
+#define SCENE_STACK_H
+
+#include <vector>
+
+enum class SceneId {
+    LAUNCHER = 0,
+    GAME,
+    IN_GAME_MENU
+};
+
+class SceneStack {
+public:
+    SceneStack() {
+        stack.push_back(SceneId::LAUNCHER);
+    }
+
+    SceneId current() const {
+        return stack.empty() ? SceneId::LAUNCHER : stack.back();
+    }
+
+    bool is(SceneId scene) const {
+        return current() == scene;
+    }
+
+    void push(SceneId scene) {
+        stack.push_back(scene);
+    }
+
+    void pop() {
+        if (stack.size() > 1) {
+            stack.pop_back();
+        }
+    }
+
+    void clear_to_launcher() {
+        stack.clear();
+        stack.push_back(SceneId::LAUNCHER);
+    }
+
+private:
+    std::vector<SceneId> stack;
+};
+
+#endif // SCENE_STACK_H