Added a Notificatio n15 min before the Calender Event

src/index.ts

@@ -37,6 +37,15 @@ function toIcsEvent(event: StoredCalendarEvent): string {
     `DESCRIPTION:${escapeIcs(formatEventDetails(event).join('\n'))}`,
     ...(event.location ? [`LOCATION:${escapeIcs(event.location)}`] : []),
     ...(event.url ? [`URL:${escapeIcs(event.url)}`] : []),
+    ...(event.status === 'confirmed'
+      ? [
+          'BEGIN:VALARM',
+          'ACTION:DISPLAY',
+          'DESCRIPTION:Notification',
+          'TRIGGER:-PT15M',
+          'END:VALARM',
+        ]
+      : []),
     'END:VEVENT',
   ].join('\r\n');
 }