misc(CI): Add CI

.github/workflows/chart-testing.yml

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+on: pull_request
+
+name: Lint and Test Charts
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.7
+
+      - name: Set up chart-testing
+        uses: helm/chart-testing-action@v2
+
+      - name: Run chart-testing (list-changed)
+        id: list-changed
+        run: |
+          changed=$(ct list-changed)
+          if [[ -n "$changed" ]]; then
+            echo "{changed}={true}" >> $GITHUB_OUTPUT
+          fi
+      
+      - name: Run chart-testing (lint)
+        run: ct lint
+
+      - name: Create Kind cluster
+        uses: helm/kind-action@v1
+        if: ${{ needs.list-changed.outputs.changed }} == 'true'
+
+      - name: Run chart-testing (install)
+        run: ct install

examples/ci/values.yml

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+frontUrl: https://foobar.dev
+apiUrl: https://foobar.dev