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/Core/AntiX11.hpp

@@ -8,5 +8,8 @@
 #error This header should only be included after including X11/Xlib.h directly or indirectly in a .cpp
 #endif
 
+#undef Always
 #undef Bool
+#undef False
 #undef None
+#undef True