Add release helm charts workflow (#349)

.github/workflows/release-helm-charts.yaml

@@ -0,0 +1,33 @@
+name: Release Charts
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Fetch history
+        run: git fetch --prune --unshallow
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "[email protected]"
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.7.2
+
+      - name: Run chart-releaser
+        uses: helm/[email protected]
+        with:
+          charts_dir: helm-chart
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"