* Rename `zha.api` to `zha.websocket_api`
* Implement a ZHA network settings API
* Use the enum name as the radio type
* Don't filter out ignored config entries
* [WIP] Start unit tests
* Add unit tests
* Rename ZHA websocket API module in `.coveragerc`
* Rename `api` to `websocket_api`
* Increase test coverage to 100%
