add gh-pages build

.github/workflows/deploy-gh-pages.yml

@@ -0,0 +1,24 @@
+name: Deploy | GH Pages
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Install project
+        run: yarn install
+      - name: Install Quasar CLI
+        run: yarn global add @quasar/cli
+      - name: Build
+        run: quasar build
+      - name: Deploy to GH pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: dist/spa