Added author to shape model

dotnet/AipsCore/Application/Models/Shape/Command/CreateRectangle/CreateRectangleCommand.cs

@@ -5,6 +5,7 @@ namespace AipsCore.Application.Models.Shape.Command.CreateRectangle;
 
 public record CreateRectangleCommand(
     string WhiteboardId,
+    string AuthorId,
     int PositionX,
     int PositionY,
     string Color,

dotnet/AipsCore/Application/Models/Shape/Command/CreateRectangle/CreateRectangleCommandHandler.cs

@@ -21,6 +21,7 @@ public class CreateRectangleCommandHandler : ICommandHandler<CreateRectangleComm
     {
         var rectangle = Rectangle.Create(
             command.WhiteboardId,
+            command.AuthorId,
             command.PositionX, command.PositionY,
             command.Color,
             command.EndPositionX,