Add a GitHub pages copy of the demo

.github/workflows/workflow.yml

@@ -1,9 +1,13 @@
 name: Publish Package to npmjs
 on:
+  push:
+    branches:
+      - main
   release:
     types: [created]
 jobs:
   build:
+    if: ${{ github.event_name == 'release' }}
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -18,3 +22,24 @@ jobs:
       - run: npm publish --provenance --access public
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{steps.deployment.outputs.page_url}}
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      pages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Pages
+        uses: actions/configure-pages@v3
+      - name: Upload Artifact
+        uses: actions/upload-pages-artifact@v2
+        with:
+          # upload entire directory
+          path: '.'
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2