Basic shell working.

Renderer.h

@@ -0,0 +1,15 @@
+/*
+ * Renderer.h - rendering abstraction
+ */
+#ifndef KTE_RENDERER_H
+#define KTE_RENDERER_H
+
+class Editor;
+
+class Renderer {
+public:
+    virtual ~Renderer() = default;
+    virtual void Draw(const Editor &ed) = 0;
+};
+
+#endif // KTE_RENDERER_H