<UserStory> 1955: Model Refactoring</UserStory>
UserStory #1955
<Changes>
1. Replaced CSV-based serialization and deserialization in ComboPackage, JobCard, Service, and ServiceBooking models with fixed-size SerializedRecord structures for shared memory storage.
2. Implemented serialize() methods to convert objects into SerializedComboPackage, SerializedJobCard, SerializedService, and SerializedServiceBooking records.
3. Implemented deserialize() methods to reconstruct objects directly from SerializedRecord types instead of parsing CSV strings.
4. Updated model class interfaces to use SerializedRecord types, removing legacy CSV serialization APIs and header generation functions.
5. Added SerializedRecords.h dependencies and forward declarations for Serialized structures across affected models.
</Changes>
<Test>
N/A
</Test>
<Review>
Sreeja Reghukumar, please review
</Review>
Jissin Mathew
4b76cae358