simplify github workflow setup

Author: ianmacartney

.github/workflows/node.js.yml

@@ -17,7 +17,5 @@ jobs:
             package.json
           node-version: "19.x"
           cache: "npm"
-      - run: npm i
-      - run: cd example && npm i && cd ..
-      - run: for dir in examples/*; do pushd "$dir" && npm i && popd; done
+      - run: node setup.cjs
       - run: npm test