feat StayExport - Added ExportDetails for StayExports

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.

src/Somnia.GuestLog/Program.cs

@@ -1,3 +1,4 @@
+using FluentStorage;
 using FluentValidation;
 using Microsoft.AspNetCore.Localization;
 using Microsoft.EntityFrameworkCore;
@@ -115,4 +116,7 @@ app.MapStaticAssets();
 app.MapRazorComponents<App>()
     .AddInteractiveServerRenderMode();
 
+//Activate S3 storage.
+AwsS3Storage.Use();
+
 app.Run();