feat(ModifyDocStatusCommandBase): create abstract class to handle common properties of commands

EnvelopeGenerator.Application/DocStatus/Commands/UpdateDocStatusCommand.cs

@@ -5,35 +5,10 @@ namespace EnvelopeGenerator.Application.DocStatus.Commands;
 /// <summary>
 /// 
 /// </summary>
-public class UpdateDocStatusCommand
+public record UpdateDocStatusCommand : ModifyDocStatusCommandBase
 {
     /// <summary>
-    /// Gets or sets the ID of the associated envelope.
+    /// Gets timestamp when this record was added. Returns the StatusChangedWhen value.
     /// </summary>
-    public int EnvelopeId { get; set; }
-
-    /// <summary>
-    /// Gets or sets the ID of the receiver associated with this status.
-    /// </summary>
-    public int ReceiverId { get; set; }
-
-    /// <summary>
-    /// Gets the current status code.
-    /// </summary>
-    public Constants.DocumentStatus Status => Value is null ? Constants.DocumentStatus.Created : Constants.DocumentStatus.Signed;
-
-    /// <summary>
-    /// Gets the timestamp when the status was changed. Retrns the AddedWhen value.
-    /// </summary>
-    public DateTime StatusChangedWhen { get; } = DateTime.Now;
-
-    /// <summary>
-    /// Gets or sets the display value associated with the status.
-    /// </summary>
-    public string? Value { get; set; }
-
-    /// <summary>
-    /// Gets timestamp when this record was added. Returns the current date and time.
-    /// </summary>
-    public virtual DateTime? ChangedWhen { get; } = DateTime.Now;
+    public override DateTime? ChangedWhen => StatusChangedWhen;
 }