added datetime tracking

app/dater.py

@@ -0,0 +1,9 @@
+from ics import Calendar
+import utils
+
+def date_calendar(calendar: Calendar):
+    time = utils.format_datetime("%d/%m/%Y %H:%M:%S")
+
+    for event in calendar.events:
+        old_description = f"event.description\n" if event.description else ""
+        event.description = f"{old_description}Retrieved on: {time}"