replace github pages module and npm scripts with github action

Static builds now get automatically published on a push from the master branch to GitHub pages using a GitHub action.

.github/workflows/publish.yml

@@ -0,0 +1,40 @@
+# Created from starter workflow for GitHub Pages; see: https://github.com/actions/starter-workflows/blob/main/pages/static.yml
+
+name: Publish to GitHub Pages
+on:
+  push
+  workflow_dispatch:
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v3
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '16.x'
+          cache: 'npm'
+      - name: Install dependencies
+        run: npm ci
+      - name: Create build
+        run: npm run build
+      - name: Setup Pages
+        uses: actions/configure-pages@v2
+      - name: Upload build
+        uses: actions/upload-pages-artifact@v1
+        with:
+          path: 'dist'
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v1