Added publish workflow to prod branch

.github/workflows/publish.yml

@@ -0,0 +1,35 @@
+name: publish Node.js Package
+
+on:
+  push:
+    branches:
+      - prod
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: yarn install
+      - run: yarn test
+
+  publish-gpr:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://npm.pkg.github.com/
+          scope: '@MillenniumEarl'
+      - run: yarn install
+      - run: git config --global user.email "$GITHUB_ACTOR@users.noreply.github.com" && git config --global user.name "$GITHUB_ACTOR"
+      - run: yarn version --minor
+      - run: git push --tags && git push
+      - run: yarn publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}