Added device file for Multi Leaf DY-107 Thermostat

[n4rrOx]

First of all, thank you for your hard work!

I created a config file for a thermostat which is from Tuya...
Other names I found are:
Lupum Dy-107
Wholesale Dy-107
Avatto Dy-107

More information about product:
https://www.electricvalvefactory.com/product/thermostat/dy107-floor-heating-thermostat.html

DPs according this HowTo:
https://www.zigbee2mqtt.io/advanced/support-new-devices/03_find_tuya_data_points.html#_8-find-your-data-point

Datapoints:

{"1":"Switch","2":"Mode","10":"Frost protection","16":"Set temperature","19":"Set temperature ceiling","24":"Current temperature","26":"The lower limit of temperature","27":"Temperature correction","30":"Weekly procedure (working day)","31":"Working day setting","36":"State of the valve","39":"Factory data reset","40":"Child lock","43":"Sensor selection","44":"Backlight brightness","45":"Fault alarm"}

Base data used for the implementation:

{
  "result": {
    "properties": [
      {
        "code": "switch",
        "custom_name": "",
        "dp_id": 1,
        "time": 1707827354644,
        "value": true
      },
      {
        "code": "mode",
        "custom_name": "",
        "dp_id": 2,
        "time": 1707827364710,
        "value": "manual"
      },
      {
        "code": "frost",
        "custom_name": "",
        "dp_id": 10,
        "time": 1707827366285,
        "value": true
      },
      {
        "code": "temp_set",
        "custom_name": "",
        "dp_id": 16,
        "time": 1707827365787,
        "value": 15
      },
      {
        "code": "upper_temp",
        "custom_name": "",
        "dp_id": 19,
        "time": 1707827366785,
        "value": 40
      },
      {
        "code": "temp_current",
        "custom_name": "",
        "dp_id": 24,
        "time": 1709711657183,
        "value": 19
      },
      {
        "code": "lower_temp",
        "custom_name": "",
        "dp_id": 26,
        "time": 1707827367779,
        "value": 10
      },
      {
        "code": "temp_correction",
        "custom_name": "",
        "dp_id": 27,
        "time": 1707827368276,
        "value": -5
      },
      {
        "code": "week_program3",
        "custom_name": "",
        "dp_id": 30,
        "time": 1709132128159,
        "value": "BgAAFAgAAA8LHgAPDB4ADxEAABYWAAAPCAAAFhcAAA8="
      },
      {
        "code": "work_days",
        "custom_name": "",
        "dp_id": 31,
        "time": 1707827369370,
        "value": "5_2"
      },
      {
        "code": "valve_state",
        "custom_name": "",
        "dp_id": 36,
        "time": 1707827365208,
        "value": "close"
      },
      {
        "code": "factory_reset",
        "custom_name": "",
        "dp_id": 39,
        "time": 1707827369869,
        "value": false
      },
      {
        "code": "child_lock",
        "custom_name": "",
        "dp_id": 40,
        "time": 1707827370372,
        "value": false
      },
      {
        "code": "sensor_choose",
        "custom_name": "",
        "dp_id": 43,
        "time": 1707827370864,
        "value": "in"
      },
      {
        "code": "backlight",
        "custom_name": "",
        "dp_id": 44,
        "time": 1707827375778,
        "value": 3
      },
      {
        "code": "fault",
        "custom_name": "",
        "dp_id": 45,
        "time": 1707827376278,
        "value": 0
      }
    ]
  },
  "success": true,
  "t": 1709808565858,
  "tid": "5d809cefdc7011eeb8e44adb5c011a40"
}

Screenshot of UI:

[n4rrOx]

          - dps_val: null
            value_redirect: alt

?
I Just copied one of the existing device files as a template and adjusted it with the Datapoints I posted above.
Works for me...

[make-all]

The value_redirect: alt that you copied is for handling two slightly different devices from the same config. You should remove those two lines from the mapping, since you do not have an alt dp to redirect to when the main one is null (missing), and this config is only for one device.

[make-all]

Make this top level name generic (just "Thermostat" for example), as there may be other products that it matches.

[make-all]

use translation_key: anti_frost here instead of name and icon, to make use of the new icon translations and name translation in latest release.

[make-all]

Use translation_key: child_lock here instead of name and the icon mappings below to make use of translations.

[make-all]

Remove this name, and use the standard "problem" class translations from Home Assistant.

[make-all]

Usually I would use "High temperature limit" for an alarm point. Since this is setting the maximum for the temperature adjustment, I would use "Maximum temperature" here. Similarly for "Minimum temperature" below.

[make-all]

Make this a light entity, with just a brightness dp below.