Store a new field ('ExportDetails') with export details. This is a JSON field in DB that can store information about the export depending on the format provider used.
Changes:
- Updated models and created required migrations.
- Show field in StayExport list.
- Created new service: IStayExportService" for common export operations.
- Updated older services to be "IStayExportFormatProvider". This services will only implement the export format.
- Renamed "IStayExportServiceFactory" to "IStayExportFormatProviderFactory" as this factory now is used to get the format providers for the given format.
Daniel-Garmig