feat(CI): add nightly build workflow (#390)

* feat(CI): add nightly build workflow

* ci: trigger nightly

* ci: workflow dispatch

* ci: oh god

* fix(ci): build the whole game not just the executable

.github/workflows/release-linux.yml

@@ -0,0 +1,87 @@
+name: Nightly (Linux, x86-64)
+
+on:
+  push:
+    paths: &workflow_paths
+      - '**.cpp'
+      - '**.h'
+      - '**.c'
+      - '**.cc'
+      - '**.cxx'
+      - '**.hh'
+      - '**.hpp'
+      - '**.hxx'
+      - '**.inl'
+      - "**meson.build"
+      - "flake.nix"
+      - '.github/workflows/build-linux.yml'
+  workflow_dispatch:
+
+jobs:
+  build-linux:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y build-essential ccache python3 python3-pip ninja-build libsdl2-dev libgl-dev libglu1-mesa-dev libpthread-stubs0-dev libglm-dev
+          python -m pip install meson
+          ccache -M 5G || true
+
+      - name: Restore ccache
+        uses: actions/cache@v4
+        with:
+          path: ~/.ccache
+          key: ${{ runner.os }}-ccache-${{ hashFiles('**/meson.build') }}
+
+      - name: Restore meson cache
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/meson
+          key: ${{ runner.os }}-meson-${{ hashFiles('**/meson.build') }}
+
+      - name: Configure Meson
+        env:
+          CC: "ccache clang"
+          CXX: "ccache clang++"
+          CCACHE_DIR: ${{ runner.temp }}/ccache
+        run: |
+          mkdir -p "$CCACHE_DIR"
+          export CCACHE_DIR="$CCACHE_DIR"
+          meson setup build --wipe --native-file=./scripts/llvm_native.txt
+
+      - name: Build with Meson
+        env:
+          CC: "ccache clang"
+          CXX: "ccache clang++"
+          CCACHE_DIR: ${{ runner.temp }}/ccache
+        run: |
+          export CCACHE_DIR="${{ runner.temp }}/ccache"
+          meson compile -C build -j $(nproc)
+
+      - name: Install patchelf
+        run: sudo apt-get install -y patchelf
+
+      - name: Package artifact
+        run: |
+          cd build
+          zip -r ../minecraft-client-linux.zip Minecraft.Client --exclude "Minecraft.Client/Minecraft.Client.p/*"
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: minecraft-client-linux-${{ github.sha }}
+          path: minecraft-client-linux.zip
+          retention-days: 7
+
+      - name: Create nightly release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: nightly
+          name: Nightly
+          prerelease: true
+          files: minecraft-client-linux.zip