ci: update lint-test workflow regarding ct docs

.github/workflows/lint-test.yaml

@@ -0,0 +1,41 @@
+name: Lint and Test Charts
+on: pull_request
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with: { fetch-depth: 0 }
+
+      - name: Setup helm
+        uses: azure/setup-helm@v3
+        with: { version: v3.13.2 }
+
+      - name: Setup python
+        uses: actions/setup-python@v4
+        with: { python-version: '3.10', check-latest: true }
+
+      - name: Setup chart-testing
+        uses: helm/chart-testing-action@v2.6.0
+
+      - name: Run chart-testing (list-changed)
+        id: list-changed
+        run: |
+          changed=$(ct list-changed --target-branch ${{ github.event.repository.default_branch }})
+          if [[ -n "$changed" ]]; then
+            echo "changed=true" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Run chart-testing (lint)
+        if: steps.list-changed.outputs.changed == 'true'
+        run: ct lint --target-branch ${{ github.event.repository.default_branch }}
+
+     - name: Create kind cluster
+        if: steps.list-changed.outputs.changed == 'true'
+        uses: helm/kind-action@v1.8.0
+
+      - name: Run chart-testing (install)
+        if: steps.list-changed.outputs.changed == 'true'
+        run: ct install --target-branch ${{ github.event.repository.default_branch }}