Add Scene with systems

- Add Scene class which populates the engine with Systems which handles
  all logic in the game
- Add Systems to ecs

CopiumEngine/src/copium/core/Application.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "copium/asset/AssetMeta.h"
+#include "copium/core/Scene.h"
 #include "copium/buffer/Framebuffer.h"
 #include "copium/event/EventHandler.h"
 #include "copium/mesh/Mesh.h"
@@ -15,7 +16,6 @@ namespace Copium
   {
     CP_DELETE_COPY_AND_MOVE_CTOR(Application);
   private:
-    std::unique_ptr<Renderer> renderer;
     AssetHandle framebuffer;
     AssetHandle texture2D;
     AssetHandle texture2D2;
@@ -25,7 +25,7 @@ namespace Copium
     std::unique_ptr<DescriptorPool> descriptorPool;
     std::unique_ptr<DescriptorSet> descriptorSet;
     std::unique_ptr<DescriptorSet> descriptorSetPassthrough;
-    std::unique_ptr<DescriptorSet> descriptorSetRenderer;
+    std::unique_ptr<Scene> scene;
     std::unique_ptr<Mesh> mesh;
     std::unique_ptr<Mesh> meshPassthrough;
     std::unique_ptr<CommandBuffer> commandBuffer;
@@ -42,7 +42,7 @@ namespace Copium
     EventResult OnEvent(const Event& event) override;
   private:
     void InitializeFrameBuffer();
-    void InitializeRenderer();
+    void InitializeScene();
     void InitializeTextureSampler();
     void InitializeDescriptorSets();
     void InitializeGraphicsPipeline();