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™️

.github/workflows/windows-build.yml

@@ -62,7 +62,7 @@ jobs:
 
     # Setup compilation mode and install project dependencies
     - name: Configure xmake and install dependencies
-      run: xmake.exe config --shadernodes=y --tests=y --unitybuild=y --arch=${{ matrix.arch }} --mode=${{ matrix.mode }} --yes
+      run: xmake.exe config --ccache=n --shadernodes=y --tests=y --unitybuild=y --arch=${{ matrix.arch }} --mode=${{ matrix.mode }} --yes
 
     # Build the engine
     - name: Build Nazara