add new helm-docs auto push action

.github/workflows/helm-docs.yaml

@@ -0,0 +1,43 @@
+name: helm-docs
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  helm-docs:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          ref: ${{ github.head_ref || github.ref_name }}
+          persist-credentials: true
+
+      - name: Install helm-docs
+        run: |
+          HELM_DOCS_VERSION=$(curl -sSL https://api.github.com/repos/norwoodj/helm-docs/releases/latest | grep '"tag_name"' | sed 's/.*"v\([^"]*\)".*/\1/')
+          echo "Installing helm-docs v${HELM_DOCS_VERSION}"
+          curl -sSL "https://github.com/norwoodj/helm-docs/releases/download/v${HELM_DOCS_VERSION}/helm-docs_${HELM_DOCS_VERSION}_Linux_x86_64.tar.gz" \
+            | tar -xz helm-docs
+          sudo mv helm-docs /usr/local/bin/helm-docs
+          helm-docs --version
+
+      - name: Run helm-docs
+        run: helm-docs
+
+      - name: Commit updated README
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add README.md
+          if git diff --cached --quiet; then
+            echo "No changes to commit."
+          else
+            git commit -m "docs: update helm chart README via helm-docs [skip ci]"
+            git push
+          fi