tried making naming more uniform and implemented most of the opengl managers

include/assets/file_parsers/uos_normal_loader.hpp

@@ -0,0 +1,8 @@
+#pragma once
+
+#include "generic/generic_3dtk_loader.hpp"
+
+struct uos_normal_loader : generic_3dtk_loader<true, false, false>
+{
+	static constexpr auto name = std::string_view("uos_normal");
+};