feat: create CD action

This action deploys the main branch to GitHub Pages when pushed to.

Author: david072

.github/workflows/cd.yml

@@ -0,0 +1,36 @@
+name: CD
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+on:
+  push:
+    branches: ["main"]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+      - name: Flutter Build Web
+        run: flutter build web --release
+      - name: Upload Artifact
+        uses: actions/[email protected]
+        with:
+          path: build/web
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        uses: actions/deploy-pages@v4