Add github actions

Author: phillebaba

.github/workflows/publish-helm-charts.yml

@@ -0,0 +1,16 @@
+name: publish-helm-chart
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Publish Helm charts
+        uses: stefanprodan/helm-gh-pages@master
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}