feat: add GitHub Actions workflow for deploying Flutter web app to GitHub Pages

Author: orestesgaolin

.github/workflows/deploy.yml

@@ -0,0 +1,64 @@
+name: Deploy Flutter Web to GitHub Pages
+
+on:
+  push:
+    branches: [ main ]
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Setup Flutter
+      uses: subosito/flutter-action@v2
+      with:
+        flutter-version: '3.24.5'
+        channel: 'stable'
+
+    - name: Get dependencies
+      run: flutter pub get
+
+    - name: Analyze code
+      run: flutter analyze
+
+    - name: Run tests
+      run: flutter test
+
+    - name: Build web
+      run: flutter build web --release --base-href /shaders_gallery/
+
+    - name: Setup Pages
+      uses: actions/configure-pages@v5
+
+    - name: Upload artifact
+      uses: actions/upload-pages-artifact@v3
+      with:
+        path: ./build/web
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.ref == 'refs/heads/main'
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4