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.

android/app/src/main/AndroidManifest.xml

@@ -8,7 +8,8 @@
     <application
         android:label="supplements"
         android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher">
+        android:icon="@mipmap/ic_launcher"
+        android:enableOnBackInvokedCallback="true">
         <activity
             android:name=".MainActivity"
             android:exported="true"
@@ -46,6 +47,10 @@
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </receiver>
+        <!-- Notification action receiver for handling action button clicks -->
+        <receiver 
+            android:name="com.dexterous.flutterlocalnotifications.ActionBroadcastReceiver" 
+            android:exported="false" />
         
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->