Plugwise

- Adam: return the control_state for each thermostat/location.
- Bugfix: correct removal of obsolete `outdoor_air_temperature` sensor.

- Bugfix: avoid device_list growing at every full-update, add device_list to fixtures.

- Anna+Elga now always has `cooling_present` set to `True`: the Elga (always) has cooling-capability.
- Cooling-mode on/off is determined from specific Elga status-codes.

- Add a list of Plugwise devices to the API.

- New feature: for Adam, provide mode = off, related to the regulation_mode = off, and mode = cool, for regulation_mode = cooling.
Also, for Adam, return to providing a single setpoint for both heating and cooling.
- Update userdata, manual-fixture-creation, and tests related to the added modes.
- A few small Typing updates.
- Manually change the adam_jip fixture, for testing in pw-beta/Core plugwise.