Move ComputeTest,GraphicsTest,RenderTest and Std140Debug to the tests folder

Also renamed NazaraUnitTests to UnitTests

tests/UnitTests/Engine/ClientModules.hpp

@@ -0,0 +1,8 @@
+// used for precompiled headers generation
+#include <Engine/Modules.hpp>
+#include <Nazara/Audio.hpp>
+#include <Nazara/Graphics.hpp>
+#include <Nazara/OpenGLRenderer.hpp>
+#include <Nazara/Platform.hpp>
+#include <Nazara/VulkanRenderer.hpp>
+#include <Nazara/Widgets.hpp>