add publish workflow

.github/workflows/publish.yml

@@ -0,0 +1,26 @@
+name: Publish
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    name: Build and publish
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18.x
+
+      - name: Install
+        run: yarn
+
+      - name: Build
+        run: yarn build
+
+      - name: Publish
+        uses: JS-DevTools/npm-publish@v3
+        with:
+          token: ${{ secrets.CERN_SIS_NPM }}