Add SignerDelegated signer activity type

Author: ATimmeh33

src/SignhostAPIClient/Rest/DataObjects/ActivityType.cs

@@ -61,6 +61,11 @@ public enum ActivityType
 		/// </summary>
 		Signed = 203,
 
+		/// <summary>
+		/// The signer delegated signing to a different signer.
+		/// </summary>
+		SignerDelegated = 204,
+
 		/// <summary>
 		/// Signed document sent.
 		/// </summary>