adding directional light actor

src/Engine/Actor/DirectionalLightActor.cpp

@@ -0,0 +1,24 @@
+#include "DirectionalLightActor.h"
+
+using namespace Seele;
+
+DirectionalLightActor::DirectionalLightActor(PScene scene)
+    : Actor(scene)
+{
+    attachComponent<Component::DirectionalLight>();
+}
+
+DirectionalLightActor::~DirectionalLightActor()
+{
+    
+}
+
+Component::DirectionalLight& DirectionalLightActor::getDirectionalLightComponent()
+{
+    return accessComponent<Component::DirectionalLight>();
+}
+
+const Component::DirectionalLight& DirectionalLightActor::getDirectionalLightComponent() const
+{
+    return accessComponent<Component::DirectionalLight>();
+}