Add npm-publish file (#124)

Author: danielsc83

.github/workflows/npm-publish.yml

@@ -0,0 +1,34 @@
+# This workflow will run tests using node and then publish a package to GitHub Packages when a release is created
+# For more information see: https://docs.github.com/en/actions/publishing-packages/publishing-nodejs-packages
+
+name: Node.js Package
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    permissions:
+      contents: read
+      # id-token: write is required for the automatic generation of provenance statements
+      id-token: write
+    runs-on: ubuntu-latest
+    # The GitHub Actions Environment containing the `NPM_TOKEN`secret
+    environment: npmjs:@sap_oss/sap-customer-data-cloud-accelerator
+    steps:
+      - uses: actions/checkout@v4
+      # Setup .npmrc file to publish to npm
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          # registry-url is required for releasing packages
+          registry-url: "https://registry.npmjs.org"
+      - run: npm ci
+      
+      - name: Publish package
+        # --provenance enables the automatic generation of provenance statements
+        # --access public is only hard required for the initial release, but it doesn't hurt having it setup
+        run: npm publish --provenance --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}