Logging to find what deCONZ events get created (#20551)

* Helpful logging to easily find what events get created

homeassistant/components/deconz/gateway.py

@@ -8,7 +8,7 @@ from homeassistant.helpers.dispatcher import (
 from homeassistant.util import slugify
 
 from .const import (
-    DECONZ_REACHABLE, CONF_ALLOW_CLIP_SENSOR, SUPPORTED_PLATFORMS)
+    _LOGGER, DECONZ_REACHABLE, CONF_ALLOW_CLIP_SENSOR, SUPPORTED_PLATFORMS)
 
 
 class DeconzGateway:
@@ -140,6 +140,7 @@ class DeconzEvent:
         self._device.register_async_callback(self.async_update_callback)
         self._event = 'deconz_{}'.format(CONF_EVENT)
         self._id = slugify(self._device.name)
+        _LOGGER.debug("deCONZ event created: %s", self._id)
 
     @callback
     def async_will_remove_from_hass(self) -> None: