add linux build workflow

.github/workflows/build_linux.yml

@@ -0,0 +1,55 @@
+name: Build Minecraft Legacy Console Edition (Linux)
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    container:
+      image: archlinux:latest
+
+    strategy:
+      matrix:
+        configuration: [Release, Debug]
+
+    steps:
+      - name: Install base dependencies
+        run: |
+          pacman -Syu --noconfirm archlinux-keyring
+          pacman -Syu --noconfirm base-devel sudo git clang lld ninja cmake extra-cmake-modules python wine msitools ca-certificates libwbclient
+
+      - name: Create build user
+        run: |
+          useradd -m builder
+          echo "builder ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
+
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Fix permissions
+        run: chown -R builder:builder .
+
+      - name: Build
+        run: |
+          sudo -u builder sh <<'EOF'
+          set -e
+          mkdir build
+          cd build
+          export WINDOWS_SDK_PATH="$PWD/my_msvc"
+          export WINE=$(command -v wine64 || command -v wine || false)
+          $WINE wineboot
+          git clone https://github.com/mstorsjo/msvc-wine
+          ./msvc-wine/vsdownload.py --accept-license --dest $(pwd)/my_msvc
+          ./msvc-wine/install.sh $(pwd)/my_msvc
+          export PATH=$(pwd)/my_msvc/bin/x64:$PATH
+          cmake .. -B . -GNinja -DCMAKE_BUILD_TYPE=${{ matrix.configuration }} -DWINDOWS_SDK_PATH=$(pwd)/my_msvc -DCMAKE_TOOLCHAIN_FILE=./toolchain-linux-winsdk.cmake
+          ninja
+          EOF
+
+      - name: Upload Release + Debug Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: MinecraftClient-${{ matrix.configuration }}
+          path: build