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/l10n/app_sv.arb

@@ -2,6 +2,67 @@
   "@@locale": "sv",
   "appTitle": "Recipe App",
   "retryAction": "Försök igen",
+  "mealPlanTitle": "Matsedel",
+  "mealPlanLoading": "Laddar matsedel...",
+  "mealPlanWeekPrevious": "Förra veckan",
+  "mealPlanWeekNext": "Nästa vecka",
+  "mealPlanWeekCurrent": "Denna vecka",
+  "mealPlanDayNoRecipe": "Inget planerat",
+  "mealPlanSelectRecipe": "Välj recept",
+  "mealPlanViewRecipe": "Visa recept",
+  "mealPlanServingsLabel": "Portioner",
+  "mealPlanResetServings": "Återställ",
+  "mealPlanSaving": "Sparar...",
+  "mealPlanPlannedRecipes": "{count, plural, one {# recept planerat} other {# recept planerade}}",
+  "@mealPlanPlannedRecipes": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "mealPlanShoppingTitle": "Inköpslista",
+  "mealPlanPickRecipeHint": "Välj recept ovan för att se en samlad ingredienslista.",
+  "mealPlanNoShoppingItems": "Inga ingredienser att visa för den här veckan.",
+  "mealPlanNoRecipesTitle": "Det finns inga recept att planera ännu.",
+  "mealPlanNoRecipesDescription": "Skapa minst ett recept först, så kan du lägga det i matsedeln.",
+  "mealPlanMissingCount": "{count, plural, one {# saknas} other {# saknas}}",
+  "@mealPlanMissingCount": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "mealPlanPartialCount": "{count, plural, one {# delvis hemma} other {# delvis hemma}}",
+  "@mealPlanPartialCount": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "mealPlanEnoughCount": "{count, plural, one {# hemma} other {# hemma}}",
+  "@mealPlanEnoughCount": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "mealPlanPantryCount": "{count, plural, one {# baslager} other {# baslager}}",
+  "@mealPlanPantryCount": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "mealPlanAllAtHome": "Du har allt hemma.",
+  "mealPlanStatusMissing": "Saknas",
+  "mealPlanStatusPartial": "Delvis hemma",
+  "mealPlanStatusEnough": "Finns hemma",
+  "mealPlanStatusPantry": "Baslager",
   "loginTitle": "Logga in",
   "usernameLabel": "Användarnamn",
   "usernameRequired": "Ange ditt användarnamn.",