add game template

template/inc/racer_game.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <engine.hpp>
+#include <game.hpp>
+
+namespace Racer {
+
+class RacerGame : public Tyra::Game {
+ public:
+  RacerGame(Tyra::Engine* engine);
+  ~RacerGame();
+
+  void init();
+  void loop();
+
+ private:
+  Tyra::Engine* engine;
+};
+
+}  // namespace Racer