Use detection instead of file

https://github.com/alexbelgium/hassio-addons/issues/1706

birdnet-pi/rootfs/helpers/birdnet_to_mqtt.py

@@ -51,8 +51,8 @@ def get_bird_code(scientific_name):
 
 def automatic_mqtt_publish(file, detection, path):
     bird = {}
-    bird['Date'] = file.file_date
-    bird['Time'] = file.start_time
+    bird['Date'] = detection.date
+    bird['Time'] = detection.time
     bird['ScientificName'] = detection.scientific_name.replace('_', ' ')
     bird['CommonName'] = detection.common_name
     bird['Confidence'] = detection.confidence