added log output

imaginaerraum_door_admin/door_handle.py

@@ -40,12 +40,10 @@ class DoorHandle:
         self.mqtt_client.on_message = self.on_message
         self.mqtt_client.connect_async(host=mqtt_host, port=mqtt_port)
         self.mqtt_client.loop_start()
+        self.logger.info(f"Connected to MQTT broker at {mqtt_host}:{mqtt_port}")
 
         self.data_fields = ['name', 'organization', 'email', 'valid_thru']
 
-
-        pass
-
     # The callback for when the client receives a CONNACK response from the server.
     def on_connect(self, client, userdata, flags, rc):
         self.logger.info("Connected to MQTT broker with result code " + str(rc))
@@ -54,8 +52,6 @@ class DoorHandle:
         # reconnect then subscriptions will be renewed.
         client.subscribe("door/#")
 
-        pass
-
     # The callback for when a PUBLISH message is received from the server.
     def on_message(self, client, userdata, msg):
         #print(msg.topic + " " + str(msg.payload))