Split engine to packages NazaraUtils and NZSL (#375)

* Move code to NazaraUtils and NZSL packages

* Reorder includes

* Tests: Remove glslang and spirv-tools deps

* Tests: Remove glslang init

* Remove NazaraUtils tests and fix Vector4Test

* Fix Linux compilation

* Update msys2-build.yml

* Fix assimp package

* Update xmake.lua

* Update xmake.lua

* Fix shader compilation on MinGW

* Final fixes

* The final fix 2: the fix strikes back!

* Disable cache on CI

* The return of the fix™️

src/Nazara/Graphics/ViewerInstance.cpp

@@ -3,12 +3,12 @@
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
 #include <Nazara/Graphics/ViewerInstance.hpp>
-#include <Nazara/Core/StackVector.hpp>
 #include <Nazara/Graphics/Graphics.hpp>
 #include <Nazara/Graphics/MaterialSettings.hpp>
 #include <Nazara/Graphics/PredefinedShaderStructs.hpp>
 #include <Nazara/Renderer/CommandBufferBuilder.hpp>
 #include <Nazara/Renderer/UploadPool.hpp>
+#include <Nazara/Utils/StackVector.hpp>
 #include <Nazara/Graphics/Debug.hpp>
 
 namespace Nz