Eurom WiFi thermostat: naming convention, preset naming

- Top level name should be unbranded
- use more common "comfort" rather than "none" for eco off preset.

custom_components/tuya_local/devices/eurom_wifi_thermostat.yaml

@@ -1,4 +1,4 @@
-name: EUROM Wifi Thermostat
+name: Thermostat
 products:
   - id: jqzvke4b1nzjcr5n
     manufacturer: EUROM
@@ -30,6 +30,6 @@ entities:
         type: boolean
         mapping:
           - dps_val: true
-            value: "eco"
+            value: eco
           - dps_val: false
-            value: "none"
+            value: comfort