Plugwise

- 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.

- Move schedule debug-message to the correct position.
- Code quality fixes.

- Expose mac-addresses for network and zigbee devices.
- Expose min/max thermostat (and heater) values and resolution (step in HA).
- Changed mac-addresses in userdata/fixtures to be obfuscated but unique.