fix(ci): use nix instead of ubuntu

.forgejo/workflows/build-release-nix.yml

@@ -0,0 +1,80 @@
+name: Build Zenyx ⚡
+
+on:
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  cargo-test:
+    name: 🧪 Run Cargo Tests
+    runs-on: nixos-latest
+    steps:
+      - name: 📥 Checkout source
+        uses: https://github.com/actions/checkout@v4
+
+      - name: 🚀 Setup & Run tests
+        run: |
+          nix-shell --run "
+          git-lfs fetch
+          git-lfs pull
+          cargo test --release --all
+          "
+
+  build:
+    name: 🏗️ Build ${{ matrix.target }}
+    needs: [cargo-test]
+    runs-on: nixos-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        target:
+          - x86_64-unknown-linux-gnu
+          - aarch64-unknown-linux-gnu
+          - x86_64-pc-windows-msvc
+          - aarch64-pc-windows-msvc
+        include:
+          - target: x86_64-unknown-linux-gnu
+            binary_name: zenyx-x86_64-linux
+            ext: ""
+            command: zigbuild
+            args: --target x86_64-unknown-linux-gnu --release
+          - target: aarch64-unknown-linux-gnu
+            binary_name: zenyx-aarch64-linux
+            ext: ""
+            command: zigbuild
+            args: --target aarch64-unknown-linux-gnu --release
+          - target: x86_64-pc-windows-msvc
+            binary_name: zenyx-x86_64-windows
+            ext: ".exe"
+            command: xwin build
+            args: --target x86_64-pc-windows-msvc --release
+          - target: aarch64-pc-windows-msvc
+            binary_name: zenyx-aarch64-windows
+            ext: ".exe"
+            command: xwin build
+            args: --target aarch64-pc-windows-msvc --release
+
+    steps:
+      - name: 📥 Checkout source
+        uses: https://github.com/actions/checkout@v4
+
+      - name: 🚀 Install Target & Build release binary
+        run: |
+          nix-shell --run "
+          git-lfs fetch --all
+          git-lfs pull
+          cargo ${{ matrix.command }} ${{ matrix.args }}
+          "
+
+      - name: 📦 Package artifact
+        run: |
+          mkdir -p artifacts
+          cp target/${{ matrix.target }}/release/zenyx${{ matrix.ext }} artifacts/${{ matrix.binary_name }}${{ matrix.ext }}
+
+      - name: ⬆️ Upload artifact
+        uses: https://code.forgejo.org/forgejo/upload-artifact@v4
+        with:
+          name: ${{ matrix.binary_name }}${{ matrix.ext }}
+          path: artifacts/${{ matrix.binary_name }}${{ matrix.ext }}
+          if-no-files-found: error