feat(ci): add portable workflow

.github/workflows/Portable.yaml

@@ -0,0 +1,28 @@
+name: Portable
+
+on:
+  - push
+
+jobs:
+  Build:
+    strategy:
+      fail-fast: false
+      matrix:
+        target:
+          - triple: x86_64-unknown-linux-gnu
+            runner: ubuntu-latest
+    runs-on: ${{ matrix.target.runner }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Nix
+        uses: DeterminateSystems/nix-installer-action@v10
+      - name: Cache
+        uses: DeterminateSystems/magic-nix-cache-action@v4
+      - name: Bundle
+        run: nix bundle --bundler github:DavHau/nix-portable -o bundle .#d4
+      - name: Upload
+        uses: actions/upload-artifact@v4
+        with:
+          name: d4-${{ matrix.target.triple }}-bundled
+          path: bundle/bin/d4