Impelement datastore shared memory codebase

Changes:
- Added SharedMemory module for file-backed memory-mapped storage
- Added MappingInfo, FileHeader, RecordState and TrackedRecord infrastructure
- Added serialized record structures for all domain models
- Replaced CSV-based serialization with binary struct serialization
- Updated model serialize/deserialize implementations to use serialized records
- Added DataStore initialization and shutdown lifecycle management
- Added datastore mutex synchronization for multi-process access
- Added shared-memory mapping configuration for all datastore entities
- Added generic loadRecords and saveRecords template infrastructure
- Added automatic datastore directory creation and .dat file storage
- Updated configuration to use binary datastore files and initial capacities
- Added enum underlying types for serialization compatibility
- Added password masking support for login, registration and password change flows
- Added Visual Studio project configuration for shared-memory components
- Prepared datastore for multi-process shared-memory persistence

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/models/JobCard.h

@@ -15,6 +15,7 @@ Date:19-May-2026
 class ServiceBooking;
 class Service;
 class User;
+struct SerializedJobCard;
 
 class JobCard
 {
@@ -70,7 +71,6 @@ public:
     void setAssignedDate(const util::Timestamp& assignedDate);
     void setStatus(util::ServiceJobStatus status);
     void setCompletionDate(const util::Timestamp& completionDate);
-    std::string serialize() const;
-    static JobCard* deserialize(const std::string&);
-    static std::string getHeaders();
+    SerializedJobCard serialize() const;
+    static JobCard* deserialize(const SerializedJobCard&);
 };