added rest of basics in TSE_Core

TSE_Core/src/elements/Scene.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <vector>
+#include "Layer.hpp"
+#include "interfaces/IWindow.hpp"
+#include "Types.hpp"
+
+namespace TSE
+{
+    class Scene
+    {
+    private:
+        string name = "Unnamed";
+        std::vector<std::pair<string, Layer*>> layers;
+
+    public:
+        void Render(IRenderer& rnd, const IWindow& wnd);
+        void DoneRender();
+        void AddLayer(Layer* l);
+        void RemoveLayer(const string& name);
+        int GetLayerCount() const;
+        Layer* GetLayerAt(const int& i) const;
+        void SetName(const string& name);
+        string GetName();
+        void Update();
+        void RenameLayer(const string& oldName, const string& newName);
+        void MoveLayerUp(Layer* l);
+        void MoveLayerDown(Layer* l);
+    };
+} // namespace TSE