feat(terminal): ReadDocument-Befehl um PDF-Speicheroptionen erweitert

Optionen `save`, `dir` und `fileName` zum `ReadDocument`-Befehl hinzugefügt.
Wenn `save` aktiviert ist, wird das PDF an dem angegebenen oder dem Standardpfad gespeichert.
Ermöglicht dem Benutzer mehr Kontrolle über Speicherort und Dateinamen.

EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentResponse.cs

@@ -3,23 +3,8 @@
 /// <summary>
 /// Represents the response for reading a document.
 /// </summary>
-public class ReadDocumentResponse
+public class ReadDocumentResponse : ReadDocumentResponseBase
 {
-    /// <summary>
-    /// The unique identifier of the document.
-    /// </summary>
-    public int Guid { get; init; }
-
-    /// <summary>
-    /// The identifier of the associated envelope.
-    /// </summary>
-    public int EnvelopeId { get; init; }
-
-    /// <summary>
-    /// The date and time when the document was added.
-    /// </summary>
-    public DateTime AddedWhen { get; init; }
-
     /// <summary>
     /// The binary data of the document, if available.
     /// </summary>

EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentResponseBase.cs

@@ -0,0 +1,22 @@
+namespace EnvelopeGenerator.Application.Documents.Queries.Read;
+
+/// <summary>
+/// Represents the response for reading a document.
+/// </summary>
+public class ReadDocumentResponseBase
+{
+    /// <summary>
+    /// The unique identifier of the document.
+    /// </summary>
+    public int Guid { get; init; }
+
+    /// <summary>
+    /// The identifier of the associated envelope.
+    /// </summary>
+    public int EnvelopeId { get; init; }
+
+    /// <summary>
+    /// The date and time when the document was added.
+    /// </summary>
+    public DateTime AddedWhen { get; init; }
+}