Add CO Detector (cobj) device support to Tuya (#58292)

homeassistant/components/tuya/sensor.py

@@ -14,6 +14,7 @@ from homeassistant.components.sensor import (
 )
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
+    DEVICE_CLASS_CO,
     DEVICE_CLASS_CO2,
     DEVICE_CLASS_CURRENT,
     DEVICE_CLASS_HUMIDITY,
@@ -94,6 +95,17 @@ SENSORS: dict[str, tuple[SensorEntityDescription, ...]] = {
         ),
         *BATTERY_SENSORS,
     ),
+    # CO Detector
+    # https://developer.tuya.com/en/docs/iot/categorycobj?id=Kaiuz3u1j6q1v
+    "cobj": (
+        SensorEntityDescription(
+            key=DPCode.CO_VALUE,
+            name="Carbon Monoxide",
+            device_class=DEVICE_CLASS_CO,
+            state_class=STATE_CLASS_MEASUREMENT,
+        ),
+        *BATTERY_SENSORS,
+    ),
     # Switch
     # https://developer.tuya.com/en/docs/iot/s?id=K9gf7o5prgf7s
     "kg": (