Enhance Thermostat definition: Determine Working state

[Apollon77]

To better work with Thermostats we should enhance the Thermostat type by:

• adding optional Valve-State ... 0..100% (mainly relevant for heating) role: value.valve - valve level (also allowed level.valve because sometimes it is writable)
• adding optional Valve-Mode with an Enum with values like "HEAT", "COOL", "NEUTRAL/OFF" that reflects what the device is actually doing

Then I could map this to matter. WDYT?

[Garfonso]

👍

• I really like the valve state. Missed that in the past.
• mode is a good addition, too. AirCondition has a mode, too. And in HomeAssistant thermostat and aircondition both are "climate" entities, where mode is the most important attribute (at least for the frontend, it seems). Would make mapping a bit easier, currenlty lovelace adapter does some crude mapping of on/off to modes. 😄

[Feuer-sturm]

issue in hm-rpc "HMIP thermostat HmIP-eTRV-B - wrong role for LEVEL and VALVE_STATE" ioBroker/ioBroker.hm-rpc#1343 which has an impact on this issue

[GermanBluefox]

Both is ok