feat(diary): Checkboxes for product when diet is chosen

lib/features/diary/models/portion.dart

@@ -1,3 +1,4 @@
+import 'package:eatvio_app/features/diary/models/state.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 
 part 'portion.freezed.dart';
@@ -10,6 +11,7 @@ class Portion with _$Portion {
     required String product_name,
     required int quantity,
     required String portion,
+    required bool from_diet,
   }) = _Portion;
 
   factory Portion.fromJson(Map<String, Object?> json) => _$PortionFromJson(json);