🔨 Add linux build pipeline

.github/workflows/nightly.yml

@@ -38,4 +38,26 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: build-output-windows
-          path: build/windows/x64/runner/Release
+          path: build/windows/x64/runner/Release
+  build-linux:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v4
+      - name: Set up Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+          cache: true
+      - run: |
+          sudo apt-get update -y
+          sudo apt-get install -y ninja-build libgtk-3-dev
+          sudo apt-get install libmpv-dev mpv
+          sudo apt-get install libayatana-appindicator3-dev
+      - run: flutter pub get
+      - run: flutter build linux
+      - name: Archive production artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-output-windows
+          path: build/linux/x64/release