[FEATURE] simple GUI support

src/gui/gui_texture.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <glm/gtc/matrix_transform.hpp>
+
+namespace gui
+{
+	/*
+	 * Structure for representing a gui item to display on the screen
+	 *
+	 * texture  = The texture for the gui
+	 * position = The center position of the gui
+	 * scale    = The size (scale) of the gui
+	 */
+	struct GuiTexture
+	{
+		int texture;
+		glm::vec2 position;
+		glm::vec2 scale;
+	};
+}