New feature: Allow user to set custom snooze duration

## Description
Currently, the snooze duration is hardcoded to 5 minutes.
Users should be able to choose their preferred snooze time (e.g., 1–59 minutes) from the app’s UI.

## Files potentially involved
- lib/app/modules/more/view/more_settings_view.dart
- android/app/src/main/kotlin/com/example/uac_companion/AlarmServices/BroadcastReceivers/AlarmSnoozeReceiver.kt
- android/app/src/main/kotlin/com/example/MainActivity.kt

## Expected Behavior
- Create a new data field for alarmSnoozeTime.
- Let the user select the custom time in the UI in the more alarm settings view.
- Follow existing UI patterns and color schemes.
- The alarm should ring after the user-selected snooze time.

## Screenshot