ci: add GitHub action to deploy to Cloudflare Pages

.github/workflows/publish.yml

@@ -0,0 +1,28 @@
+name: 'Publish main branch'
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      deployments: write
+    name: Publish to Cloudflare Pages
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+      - run: npm ci
+      - run: npm run build
+      - uses: cloudflare/pages-action@v1
+        with:
+          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          accountId: ${{ vars.CLOUDFLARE_ACCOUNT_ID }}
+          projectName: ${{ vars.CLOUDFLARE_PROJECT_NAME }}
+          directory: dist
+          gitHubToken: ${{ secrets.GH_TOKEN }}
+          branch: main