feat: Add settings provider for theme and time range management

- Implemented SettingsProvider to manage user preferences for theme options and time ranges for reminders.
- Added persistent reminder settings with configurable retry intervals and maximum attempts.
- Created UI for settings screen to allow users to customize their preferences.
- Integrated shared_preferences for persistent storage of user settings.

feat: Introduce Ingredient model

- Created Ingredient model to represent nutritional components with properties for id, name, amount, and unit.
- Added methods for serialization and deserialization of Ingredient objects.

feat: Develop Archived Supplements Screen

- Implemented ArchivedSupplementsScreen to display archived supplements with options to unarchive or delete.
- Added UI components for listing archived supplements and handling user interactions.

chore: Update dependencies in pubspec.yaml and pubspec.lock

- Updated shared_preferences dependency to the latest version.
- Removed flutter_datetime_picker_plus dependency and added file dependency.
- Updated Flutter SDK constraint to >=3.27.0.

pubspec.yaml

@@ -43,15 +43,15 @@ dependencies:
   # State management
   provider: ^6.1.1
   
+  # Settings persistence
+  shared_preferences: ^2.2.2
+  
   # Local notifications
   flutter_local_notifications: ^19.4.1
   timezone: ^0.10.1
   
   # Date time handling
   intl: ^0.20.2
-  
-  # UI components
-  flutter_datetime_picker_plus: ^2.1.0
 
 dev_dependencies:
   flutter_test: