feature: Outdoor temperature

Author: Sander0542

src/pymelcloud/ata_device.py

@@ -207,6 +207,16 @@ def room_temperature(self) -> Optional[float]:
             return None
         return self._state.get("RoomTemperature")
 
+    @property
+    def outdoor_temperature(self) -> Optional[float]:
+        """Return outdoor temperature reported by the device."""
+        if self._device_conf.get("HideOutdoorTemperature", False):
+            return None
+        device = self._device_conf.get("Device", {})
+        if not device.get("HasOutdoorTemperature", False):
+            return None
+        return device.get("OutdoorTemperature")
+
     @property
     def target_temperature(self) -> Optional[float]:
         """Return target temperature set for the device."""