chore: [ANDROSDK-2335] migrate program domain models to kotlin

[taridepaco]

Migrates the remaining domain models in the program package from Java AutoValue classes to Kotlin data classes annotated with @ModelBuilder: the section and stage-section models, their link tables, program rule and program rule action, category mapping, and analytics period boundary.

As part of the analytics period boundary migration, the assignment of the parent programIndicator and the validation of the mandatory fields were moved into the network DTO layer (toDomain now returns null for invalid boundaries, filtered out with mapNotNull). This lets programIndicator, boundaryTarget and analyticsPeriodBoundaryType be non-null in the domain model and removes the scattered null handling that previously lived in the handler and the DB mapper.

Related task: ANDROSDK-2335

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
96.2% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud