feat(AddReportBehavior): add report creation logic to AddReportBehavior

- Added CreateReport method to generate PDF report from envelope data
- Integrated call to CreateReport within pipeline after history creation
- Introduced error handling via CreateReportException for missing report data
- Added necessary using directives for EnvelopeReports, Exceptions, and Entities

EnvelopeGenerator.Application/Pdf/Behaviors/AddReportBehavior.cs

@@ -1,6 +1,9 @@
 using MediatR;
 using EnvelopeGenerator.Application.Histories.Commands;
 using EnvelopeGenerator.Domain.Constants;
+using EnvelopeGenerator.Application.EnvelopeReports;
+using EnvelopeGenerator.Application.Exceptions;
+using EnvelopeGenerator.Domain.Entities;
 
 namespace EnvelopeGenerator.Application.Pdf.Behaviors;
 
@@ -40,6 +43,29 @@ public class AddReportBehavior : IPipelineBehavior<BurnPdfCommand, byte[]>
                 Status = EnvelopeStatus.EnvelopeReportCreated,
             }, cancel);
 
+        docResult = await CreateReport(request.Envelope!, cancel);
+
         return docResult;
     }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="envelope"></param>
+    /// <param name="cancel"></param>
+    /// <returns></returns>
+    /// <exception cref="CreateReportException"></exception>
+    public async Task<byte[]> CreateReport(Envelope envelope, CancellationToken cancel)
+    {
+        var oItems = await _sender.ReadEnvelopeReportAsync(envelope.Id, cancel: cancel);
+
+        if (!oItems.Any())
+        {
+            throw new CreateReportException("No report data found!");
+        }
+
+        var oBuffer = DoCreateReport(oItems);
+
+        return oBuffer;
+    }
 }