add github action to deploy dist/ to gh-pages on push

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

@@ -0,0 +1,22 @@
+name: Build and Deploy
+on: [push]
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Install and Build
+        run: |
+          npm install
+          npm run build
+
+      - name: Deploy
+        uses: JamesIves/github-pages-deploy-action@releases/v3 # https://github.com/marketplace/actions/deploy-to-github-pages
+        with:
+          ACCESS_TOKEN: ${{ secrets.ACCESS_TOKEN }}
+          BRANCH: gh-pages
+          FOLDER: dist