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™️

xmake/actions/generateheaders.lua

@@ -74,8 +74,6 @@ on_run(function ()
 
 	paths["Core"].Excludes["ECS.hpp"] = true
 	paths["OpenGLRenderer"].Excludes["Wrapper.hpp"] = true
-	paths["Shader"].Excludes["ShaderLangErrorList.hpp"] = true
-	paths["Shader"].Excludes["ShaderLangTokenList.hpp"] = true
 	paths["VulkanRenderer"].Excludes["Wrapper.hpp"] = true
 
 	-- OpenGL renderer wrapper