* Add expandable support for data entry form flows
* Update config_validation.py
* optional options
* Adjust
* Correct translations of data within sections
* Update homeassistant/components/kitchen_sink/config_flow.py
Co-authored-by: Robert Resch <robert@resch.dev>
* Add missing import
* Update tests/components/kitchen_sink/test_config_flow.py
Co-authored-by: Robert Resch <robert@resch.dev>
* Format code
* Match frontend when serializing
* Move section class to data_entry_flow
* Correct serializing
* Fix import in kitchen_sink
* Move and update test
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Co-authored-by: Bram Kragten <mail@bramkragten.nl>
Co-authored-by: Robert Resch <robert@resch.dev>
