Update workflow

Author: sengthaite

.github/workflows/flutter_ci_cd.yml

@@ -61,4 +61,29 @@ jobs:
         prerelease: false
         draft: false
       env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  build-web:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: 'stable'
+
+      - name: Install dependencies
+        run: flutter pub get
+
+      - name: Build Web
+        # Replace 'YOUR_REPO_NAME' with your actual repository name (e.g., /my-app/)
+        run: flutter build web --release --base-href "/"
+
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./build/web
+          publish_branch: gh-pages