feat(ios): implement getNotificationStatus and cancelAllNotifications methods
Implemented status and cancellation methods matching Android functionality:
getNotificationStatus():
- Gets pending notifications from UNUserNotificationCenter
- Retrieves schedules from UserDefaults
- Calculates next notification time from schedules
- Returns status matching Android API structure
- Includes isEnabled, isScheduled, lastNotificationTime, nextNotificationTime, pending count
cancelAllNotifications():
- Removes all pending daily notifications from UNUserNotificationCenter
- Cancels background fetch tasks by identifier
- Clears notification schedules from UserDefaults
- Idempotent (safe to call multiple times)
- Matches Android behavior (cancels alarms, WorkManager jobs, database)
Helper Methods:
- getSchedulesFromUserDefaults() - Retrieves stored schedules
- Improved storeScheduleInUserDefaults() - Prevents duplicates
Progress: 12/52 methods implemented (23% complete)
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