feature(CI): Added esp_io_solution repo clone and examples build to workflow

Author: roma-jam

.github/workflows/build_iot_examples.yml

@@ -26,3 +26,4 @@ jobs:
           pip install idf-component-manager==1.5.2 idf-build-apps --upgrade
           cd esp-iot-solution
           idf-build-apps find --path examples/usb/device/ --recursive --target all --manifest-file examples/.build-rules.yml
+          idf-build-apps build --path examples/usb/device/ --recursive --target all --manifest-file examples/.build-rules.yml