Plugwise

- [Core Issue 68621](https://github.com/home-assistant/core/issues/68621)

- Link to plugwise module [v0.12.0](https://github.com/plugwise/python-plugwise/releases/tag/0.12.0)
- Stick:
- Feature: Add "Energy Consumption Today" sensor to allow adding devices to the new 'Energy' dashboard introduced in Home-Assistant 2021.8
- Bugfix: Make energy consumption monitoring more reliable and possible fixes reported issues 149 & 157
- Smile:
- Implement the new sensor attributes needed to support HA Core Energy
- Correct the unit_of_measurement for cumulative energy sensors (Wh --> kWh)

- Fix for [250](https://github.com/plugwise/plugwise-beta/issues/250)
- Rename heatpump outdoor_temperature sensor to outdoor_air_temperature sensor

- Fix for [Core Issue 68003](https://github.com/home-assistant/core/issues/68003)
- Refix solution for 158

- Fix for 158: error setting up for systems with an Anna and and Elga (heatpump).
- Block connecting to the Anna when an Adam is present (fixes pw-beta 231).
- Combine helper-functions, possible after removing code related to the device_state sensor.
- Remove single_master_thermostat() function and the related self's, no longer needed.
- Use .get() where possible.
- Implement walrus constructs ( := ) where possible.
- Improve and simplify.

- Provide cooling_state and heating_state as `binary_sensors`, show cooling_state only when cooling is present.
- Clean up gw_data, e.g. remove `single_master_thermostat` key.