refactor(api-python-sdk): generate client on build time

api/python/.gitignore

@@ -0,0 +1,2 @@
+openapi.yaml
+airthings_api_client/

api/python/README.md

@@ -4,15 +4,20 @@
 
 API SDK for Airthings consumer products.
 
+## Getting Started
+
 Prerequisites:
 
 - [Python](https://www.python.org/downloads/) with version 3.11 that is required by Home Assistant ([docs](https://developers.home-assistant.io/docs/development_environment?_highlight=python&_highlight=versi#manual-environment) or [reference](https://github.com/home-assistant/architecture/blob/master/adr/0002-minimum-supported-python-version.md))
 - [Poetry](https://python-poetry.org/docs/#installation)
 
-Install dependencies:
+Then run following steps:
 
-```bash
-poetry install
+```shell
+poetry install # Install dependencies
+./generate_client.sh # Generate REST API client code
+python3 examples//fetch_devices_and_sensors.py CLIENT_ID CLIENT_SECRET # Run example to make sure all works
 ```
 
+
 [logo]: https://upload.wikimedia.org/wikipedia/commons/d/d1/Airthings_logo.svg