Add project files.

DXApp.TemplateKitProject/Models/PdfExtractionResult.cs

@@ -0,0 +1,20 @@
+namespace DXApp.TemplateKitProject.Models;
+
+public class PdfExtractionResult
+{
+    public List<ExtractedAttachment> Attachments { get; init; } = [];
+    public bool HasAttachments => Attachments.Count > 0;
+
+    public ExtractedAttachment? ZugferdXmlAttachment =>
+        Attachments.FirstOrDefault(a => a.IsZugferdXml);
+
+    public bool HasZugferdXml => ZugferdXmlAttachment is not null;
+}
+
+public class ExtractedAttachment
+{
+    public string OriginalFileName { get; init; }
+    public string SavedFilePath { get; init; }
+    public long FileSizeBytes { get; init; }
+    public bool IsZugferdXml { get; init; }
+}