feat(ReceiverSecretDto): ReceiverDto wurde so hinzugefügt, dass es vererbt wird.

- Die Eigenschaft TotpSecretkey wurde aus ReceiverDto entfernt.
 - Die Eigenschaft TotpSecretkey wurde zu ReceiverSecretDto hinzugefügt.

EnvelopeGenerator.Application/Dto/Receiver/ReceiverDto.cs

@@ -41,11 +41,6 @@ public class ReceiverDto
     /// </summary>
     public string? LastUsedName => EnvelopeReceivers?.LastOrDefault()?.Name;
 
-    /// <summary>
-    /// 
-    /// </summary>
-    public string? TotpSecretkey { get; set; } = null;
-
     /// <summary>
     /// 
     /// </summary>

EnvelopeGenerator.Application/Dto/Receiver/ReceiverSecretDto.cs

@@ -0,0 +1,15 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.Application.Dto.Receiver;
+
+/// <summary>
+/// 
+/// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
+public class ReceiverSecretDto : ReceiverDto
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public string? TotpSecretkey { get; set; }
+}