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/Models/DTOs/StayExportFileDTO.cs

@@ -13,6 +13,8 @@ public class StayExportFileDTO
     public StayExportFileResult? ExportResult { get; set; }
 
     public string? ExportedPath { get; set; }
+    
+    public string? ExportDetails { get; set; }
 
 
     public DateTime? ExportTime { get; set; }

src/Somnia.GuestLog/Models/Entities/StayExportFile.cs

@@ -17,6 +17,11 @@ public class StayExportFile : BaseEntity
     /// </summary>
     public string? ExportedPath { get; set; }
 
+    /// <summary>
+    /// A JSON column to store details about the exported file.
+    /// This details can contain information about errors, which stays where included, etc.
+    /// </summary>
+    public string? ExportDetails { get; set; }
 
     /// <summary>
     /// Date/Time when export file was generated.

src/Somnia.GuestLog/Models/EntityMapping.cs

@@ -67,6 +67,7 @@ internal static class EntityMapping
             ExportParams = exportParamsDto,
             ExportResult = entity.ExportResult,
             ExportedPath = entity.ExportedPath,
+            ExportDetails = entity.ExportDetails,
             ExportTime = entity.ExportTime,
         };
     }