Add support for DHT and DS18B20 sensors via Konnected firmware (#21189)

* mvp basic temperature sensor support

* support for DHT temperature & humidity

* add support for ds18b20 sensors

* improve resolution of device settings

* update requirements_all.txt

* re-organize new file

* don't use filter(lambda: syntax

* set unique_id on entities to allow renaming in the UI

* leverage base Entity module to do C to F conversion

* add option for setting poll_interval

* use handler pattern to handle updates from Konnected device

* cleanups from code review

homeassistant/components/konnected/binary_sensor.py

@@ -39,9 +39,13 @@ class KonnectedBinarySensor(BinarySensorDevice):
         self._pin_num = pin_num
         self._state = self._data.get(ATTR_STATE)
         self._device_class = self._data.get(CONF_TYPE)
-        self._name = self._data.get(CONF_NAME, 'Konnected {} Zone {}'.format(
-            device_id, PIN_TO_ZONE[pin_num]))
-        _LOGGER.debug("Created new Konnected sensor: %s", self._name)
+        self._unique_id = '{}-{}'.format(device_id, PIN_TO_ZONE[pin_num])
+        self._name = self._data.get(CONF_NAME)
+
+    @property
+    def unique_id(self) -> str:
+        """Return the unique id."""
+        return self._unique_id
 
     @property
     def name(self):