Added OIDC workflow and Helm Chart

.github/workflows/check.yml

@@ -38,6 +38,11 @@ jobs:
       - run: cargo clippy --locked --all-targets -- -D warnings
       - run: cargo test --locked
       - run: cargo test --locked --tests -- --ignored --test-threads=1
+      - uses: azure/setup-helm@v4
+      - name: Helm chart
+        run: |
+          helm lint helm/meguri --strict -f helm/meguri/ci/values.yaml
+          helm template meguri helm/meguri -f helm/meguri/ci/values.yaml > /dev/null
       - uses: actions/setup-node@v4
         with:
           node-version: 22