ci: add github action

Signed-off-by: BoHong Li <raccoon@hackmd.io>

Author: a60814billy

.github/workflows/deploy.yaml

@@ -0,0 +1,18 @@
+name: deploy-automation
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Run chart-releaser
+        uses: hackmdio/helm-gh-pages@bbac2de
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          helm_version: 2.16.5