feat: add meal planning feature with API integration

- Introduced MealPlanApiPaths for handling meal plan related API endpoints.
- Added MealPlanScreen for displaying and managing meal plans.
- Implemented MealPlanRepository for fetching and updating meal plan data.
- Created data models: MealPlanEntry, MealPlanRecipe, InventoryCompareItem, ShoppingItem, and MealPlanDashboard.
- Integrated meal plan functionality into the app router and UI.
- Updated localization files for meal plan related strings in English and Swedish.
- Added state management for meal plan using Riverpod.

flutter/lib/core/router/app_router.dart

@@ -17,6 +17,7 @@ import '../../features/inventory/presentation/create_inventory_screen.dart';
 import '../../features/inventory/presentation/inventory_edit_screen.dart';
 import '../../features/inventory/presentation/consume_inventory_screen.dart';
 import '../../features/inventory/presentation/consumption_history_screen.dart';
+import '../../features/meal_plan/presentation/meal_plan_screen.dart';
 import '../../features/pantry/presentation/pantry_screen.dart';
 
 final appRouterProvider = Provider<GoRouter>((ref) {
@@ -159,6 +160,10 @@ final appRouterProvider = Provider<GoRouter>((ref) {
             path: '/inventory',
             builder: (context, state) => const InventoryScreen(),
           ),
+          GoRoute(
+            path: '/matsedel',
+            builder: (context, state) => const MealPlanScreen(),
+          ),
           GoRoute(
             path: '/baslager',
             builder: (context, state) => const PantryScreen(),