Rename corelogic->hcore, add simulator skeleton classes

hcore/include/simulator/canvas.h

@@ -0,0 +1,21 @@
+#ifndef CANVAS_H
+#define CANVAS_H
+
+#include <simulator/scene.h>
+
+namespace canvas {
+
+class Canvas {
+public:
+    Canvas();
+    ~Canvas();
+
+    SceneId loadScene(Scene &scene);
+
+private:
+    // Add private members here
+};
+
+} // namespace canvas
+
+#endif // CANVAS_H