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/api/api_paths.dart

@@ -26,4 +26,20 @@ class InventoryApiPaths {
 class PantryApiPaths {
   static const list = '/pantry';
   static String remove(int id) => '/pantry/$id';
+}
+
+class MealPlanApiPaths {
+  static const list = '/meal-plan';
+
+  static String listByRange(String from, String to) =>
+    '$list?from=${Uri.encodeQueryComponent(from)}&to=${Uri.encodeQueryComponent(to)}';
+
+  static String shoppingList(String from, String to) =>
+    '$list/shopping-list?from=${Uri.encodeQueryComponent(from)}&to=${Uri.encodeQueryComponent(to)}';
+
+  static String inventoryCompare(String from, String to) =>
+    '$list/inventory-compare?from=${Uri.encodeQueryComponent(from)}&to=${Uri.encodeQueryComponent(to)}';
+
+  static String removeByDate(String date) =>
+    '$list/${Uri.encodeComponent(date)}';
 }