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/checkfiles.lua

@@ -486,6 +486,8 @@ on_run(function ()
 						order = 1 -- top engine includes
 					elseif inclusions[i].path == "Nazara/" .. debugIncludeModule .. "/Debug.hpp" then
 						order = 6 -- debug include
+					elseif inclusions[i].path:match("^Nazara/Utils/") then
+						order = 2.1 -- NazaraUtils
 					elseif inclusions[i].path:match("^Nazara/") then
 						order = 2 -- engine includes
 					elseif IsSystemHeader(inclusions[i].path) then