chore: adding helm lint ci test

.github/workflows/helm-lint.yaml

@@ -0,0 +1,33 @@
+name: check-helm-lint
+on:
+  push:
+    paths:
+      - "cmd/build/helmify/static/**"
+      - "manifest_staging/**"
+  pull_request:
+    paths:
+      - "cmd/build/helmify/static/**"
+      - "manifest_staging/**"
+
+permissions: read-all
+
+jobs:
+  helm_lint_test:
+    name: "Helm lint"
+    runs-on: ubuntu-22.04
+    timeout-minutes: 15
+
+    steps:
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+    - name: Set up Helm
+      uses: azure/setup-helm@fe7b79cd5ee1e45176fcad797de68ecaf3ca4814 # v4.2.0
+      with:
+        version: "3.14.1"
+      id: install
+
+    - name: Lint Helm charts
+      run: |
+        helm lint manifest_staging/charts/gatekeeper/
+        helm lint cmd/build/helmify/static/