Add DDF for Bosch Thermostat II 230V

[aSauerwein]

copy/pasted the thermostat2.json and adapter for the wired versions. changes:

• i removed the config/battery
• added state/valve with read&parse of 0x4020

open questions

• I did not understand what the "bindings" are used for deconz-gui still shows the battery icon. don't know what needs to be changed to get that icon removed.
• for state/valve I just used Item.val = Attr.val but I'm not sure if that correctly matches the percent valve opening
• I cannot control the thermostat with phoscon web app. It just displays 40F and nothing changes, but it's working fine over homeassistant and rest api

fixes https://github.com/dresden-elektronik/deconz-rest-plugin/issues/7553

[mattreim]

Hello aSauerwein,

with this changes should be function the DDF:

1. Correction file name: "room_thermostat2_230V"
2. Add product name: "Room thermostat II 230V (BTH-RM230Z)"
3. Add: valve
4. Delete: battery
5. Delete: check-in

room_thermostat2_230V.json

Please check the DDF and reopen the pull request.

[aSauerwein]

hi @mattreim thanks! i imported your .json and it looks fine!

[mattreim]

@aSauerwein check whether the device supports this cluster.