Added a basic skylight engine. Currently it's really laggy.

Also tried fixing the autobuild action since it fetches the repo without submodules.

.gitea/workflows/autobuild.yaml

@@ -11,13 +11,15 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:    
+          submodules: recursive
 
       - name: Install build tools
         run: |
           # echo "deb [signed-by=/usr/share/keyrings/ubuntu-archive-keyring.gpg] http://archive.ubuntu.com/ubuntu noble main" | sudo tee /tmp/only.list
           # sudo apt-get update -o Dir::Etc::sourcelist=/tmp/only.list -o Dir::Etc::sourceparts="-" -qq
           sudo apt update
-          sudo apt install -y build-essential cmake zip unzip make libxrandr-dev g++-mingw-w64-x86-64 gcc-mingw-w64-x86-64 libxinerama-dev libxcursor-dev libxi-dev libgl-dev
+          sudo apt install -y build-essential cmake zip unzip make libxrandr-dev g++-mingw-w64-x86-64 gcc-mingw-w64-x86-64 g++-mingw-i686-x86-64 gcc-mingw-i686-x86-64 libxinerama-dev libxcursor-dev libxi-dev libgl-dev
 
       - name: Build makeheaders
         run: |