Fix frame update logic and emulator support

- Fix basic1.cpp loop to handle set_frame_updates(true) correctly with sleep
- Update emulator loop for concurrent input and frame updates
- Update emulator for SFML 3.0 compatibility
- Add INPUT.FRAME_TICK constant to Lua bindings
- Enable frame updates in snake.lua example

emulator/game_launcher.cpp

@@ -8,7 +8,8 @@ extern Font font_5x5_obj;
 GameLauncher::GameLauncher(uint16_t width, uint16_t height, LowLevelRenderer* renderer, LowLevelGUI* gui, InputManager* input_manager)
     : width(width), height(height), renderer(renderer), gui(gui), input_manager(input_manager),
       selected_index(0), selected_game(nullptr) {}
-void GameLauncher::register_game(const char* name, const char* description, Game* (*factory)(uint16_t, uint16_t, LowLevelRenderer*, LowLevelGUI*, InputManager*)) {
+void GameLauncher::register_game(const char* name, const char* description, 
+                                  std::function<Game*(uint16_t, uint16_t, LowLevelRenderer*, LowLevelGUI*, InputManager*)> factory) {
     GameEntry entry;
     entry.name = name;
     entry.description = description;