Reorganize source files into logical subdirectories

Co-authored-by: Hirek193 <23196899+Hirek193@users.noreply.github.com>

rendering/opengl33skydome.h

@@ -0,0 +1,36 @@
+/*
+This Source Code Form is subject to the
+terms of the Mozilla Public License, v.
+2.0. If a copy of the MPL was not
+distributed with this file, You can
+obtain one at
+http://mozilla.org/MPL/2.0/.
+*/
+
+#pragma once
+
+#include "gl/vao.h"
+#include "gl/shader.h"
+#include "gl/buffer.h"
+
+class opengl33_skydome {
+
+public:
+// constructors
+    opengl33_skydome() = default;
+// destructor
+    ~opengl33_skydome() {;}
+// methods
+    // updates data stores on the opengl end. NOTE: unbinds buffers
+    void update();
+    // draws the skydome
+    void render();
+
+private:
+// members
+	std::optional<gl::buffer> m_vertexbuffer;
+	std::optional<gl::buffer> m_indexbuffer;
+	std::optional<gl::buffer> m_coloursbuffer;
+	std::optional<gl::program> m_shader;
+	std::optional<gl::vao> m_vao;
+};