Add Withings webhooks (#34447)

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

homeassistant/components/withings/binary_sensor.py

@@ -0,0 +1,40 @@
+"""Sensors flow for Withings."""
+from typing import Callable, List
+
+from homeassistant.components.binary_sensor import (
+    DEVICE_CLASS_PRESENCE,
+    DOMAIN as BINARY_SENSOR_DOMAIN,
+    BinarySensorDevice,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import Entity
+
+from .common import BaseWithingsSensor, async_create_entities
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: Callable[[List[Entity], bool], None],
+) -> None:
+    """Set up the sensor config entry."""
+    entities = await async_create_entities(
+        hass, entry, WithingsHealthBinarySensor, BINARY_SENSOR_DOMAIN
+    )
+
+    async_add_entities(entities, True)
+
+
+class WithingsHealthBinarySensor(BaseWithingsSensor, BinarySensorDevice):
+    """Implementation of a Withings sensor."""
+
+    @property
+    def is_on(self) -> bool:
+        """Return true if the binary sensor is on."""
+        return self._state_data
+
+    @property
+    def device_class(self) -> str:
+        """Provide the device class."""
+        return DEVICE_CLASS_PRESENCE