Add project files.

SampleWorkflowWeb/Dao/GetStateDao.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace SampleWorkflowWeb.Dao;
+
+public class GetStateDao
+{
+    /// <summary>
+    /// شناسه گردش کار
+    /// <remark>
+    /// Type: Guid
+    /// </remark>
+    /// </summary>
+    [Display(Name = "شناسه گردش کار")]
+    [Required(ErrorMessage = "{0} اجباری است")]
+    public string InstanceId { get; set; }
+}