More work to drivers

- Add gfx_test
- add texture loading to GfxOpenGL
- add full submit code
- add debug logging
- add construct and destroy functionality to Pool
- add command functionality
- add vertex and index pools to lithium (static and not threadsafe yet)
- Update GfxDriver Matrix with SetViewPort
- Add glfw (only dependency of gfx_test) maybe later required for input driver

include/pd/lithium/lithium.hpp

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <pd/lithium/command.hpp>
+#include <pd/lithium/pools.hpp>
+#include <pd/lithium/vertex.hpp>