ci: add npm trusted publishing workflow

.github/workflows/publish-npm.yml

@@ -0,0 +1,36 @@
+name: Publish npm package
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          registry-url: "https://registry.npmjs.org"
+
+      - name: Install dependencies
+        working-directory: frontend
+        run: npm install
+
+      - name: Build package
+        working-directory: frontend
+        run: npm run build
+
+      - name: Publish to npm
+        working-directory: frontend
+        run: npm publish --access public --provenance