Wireguard component (#4256)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Co-authored-by: Simone Rossetto <simros85@gmail.com>
Co-authored-by: Thomas Bernard <thomas0bernard@gmail.com>

esphome/components/wireguard/binary_sensor.py

@@ -0,0 +1,28 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import binary_sensor
+from esphome.const import (
+    CONF_STATUS,
+    DEVICE_CLASS_CONNECTIVITY,
+)
+
+from . import Wireguard
+
+CONF_WIREGUARD_ID = "wireguard_id"
+
+DEPENDENCIES = ["wireguard"]
+
+CONFIG_SCHEMA = {
+    cv.GenerateID(CONF_WIREGUARD_ID): cv.use_id(Wireguard),
+    cv.Optional(CONF_STATUS): binary_sensor.binary_sensor_schema(
+        device_class=DEVICE_CLASS_CONNECTIVITY,
+    ),
+}
+
+
+async def to_code(config):
+    parent = await cg.get_variable(config[CONF_WIREGUARD_ID])
+
+    if status_config := config.get(CONF_STATUS):
+        sens = await binary_sensor.new_binary_sensor(status_config)
+        cg.add(parent.set_status_sensor(sens))