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™️

include/Nazara/Platform/CursorController.hpp

@@ -10,9 +10,9 @@
 #include <Nazara/Prerequisites.hpp>
 #include <Nazara/Core/HandledObject.hpp>
 #include <Nazara/Core/ObjectHandle.hpp>
-#include <Nazara/Core/Signal.hpp>
 #include <Nazara/Platform/Cursor.hpp>
 #include <Nazara/Platform/Enums.hpp>
+#include <Nazara/Utils/Signal.hpp>
 
 namespace Nz
 {

include/Nazara/Platform/Enums.hpp

@@ -7,7 +7,7 @@
 #ifndef NAZARA_PLATFORM_ENUMS_HPP
 #define NAZARA_PLATFORM_ENUMS_HPP
 
-#include <Nazara/Core/Flags.hpp>
+#include <Nazara/Utils/Flags.hpp>
 
 namespace Nz
 {

include/Nazara/Platform/EventHandler.hpp

@@ -10,9 +10,9 @@
 #include <Nazara/Prerequisites.hpp>
 #include <Nazara/Core/HandledObject.hpp>
 #include <Nazara/Core/ObjectHandle.hpp>
-#include <Nazara/Core/Signal.hpp>
 #include <Nazara/Platform/Config.hpp>
 #include <Nazara/Platform/Event.hpp>
+#include <Nazara/Utils/Signal.hpp>
 
 namespace Nz
 {

include/Nazara/Platform/Window.hpp

@@ -10,7 +10,6 @@
 #define NAZARA_PLATFORM_WINDOW_HPP
 
 #include <Nazara/Prerequisites.hpp>
-#include <Nazara/Core/MovablePtr.hpp>
 #include <Nazara/Math/Vector2.hpp>
 #include <Nazara/Platform/Config.hpp>
 #include <Nazara/Platform/Cursor.hpp>
@@ -20,6 +19,7 @@
 #include <Nazara/Platform/Icon.hpp>
 #include <Nazara/Platform/VideoMode.hpp>
 #include <Nazara/Platform/WindowHandle.hpp>
+#include <Nazara/Utils/MovablePtr.hpp>
 #include <condition_variable>
 #include <mutex>
 #include <queue>