adds publishing workflow

.github/workflows/publish.yml

@@ -0,0 +1,17 @@
+name: Node.js Package
+on:
+  release:
+    types: [created]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '10.14.x'
+          registry-url: 'https://npm.pkg.github.com'
+      - run: yarn install
+      - run: yarn publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}