refactor(Extensions): update SaveDocStatusAsync to use uuid and signature

EnvelopeGenerator.Application/DocStatus/Commands/SaveDocStatusCommand.cs

@@ -22,26 +22,18 @@ public static class Extensions
     /// 
     /// </summary>
     /// <param name="mediator"></param>
-    /// <param name="key"></param>
+    /// <param name="uuid"></param>
+    /// <param name="signature"></param>
     /// <param name="value"></param>
+    /// <param name="cancel"></param>
     /// <returns></returns>
-    public static Task<int?> SaveDocStatusAsync(this IMediator mediator, string key, string? value = null)
+    public static Task<int?> SignDocAsync(this IMediator mediator, string uuid, string signature, string value, CancellationToken cancel = default)
-    {
+        => mediator.Send(new SaveDocStatusCommand()
-        return mediator.Send(new SaveDocStatusCommand()
         {
-            Key = key,
+            Envelope = new() { Uuid = uuid },
+            Receiver = new() { Signature = signature },
             Value = value
-        });
+        }, cancel);
-    }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="mediator"></param>
-    /// <param name="key"></param>
-    /// <param name="value"></param>
-    /// <returns></returns>
-    public static Task<int?> SignDocAsync(this IMediator mediator, string key, string value) => mediator.SaveDocStatusAsync(value);
 }
 
 /// <summary>