feat(ci): add helm lint

Signed-off-by: Cyril Corbon <[email protected]>

Author: cyril-corbon

.github/workflows/lint-helm.yml

@@ -0,0 +1,24 @@
+name: "Lint: helm chart"
+on:
+  push:
+    branches:
+      - '**'
+    paths:
+      - 'helm/**'
+      - '.github/workflows/lint-helm.yml'
+  workflow_dispatch:
+
+jobs:
+  helm3-lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.4.0
+
+      - name: Helm lint
+        run: helm lint helm/azure-resourcemanager-exporter