Add RootAction navigation property to RecActionView

Introduced a new nullable `RootAction` property in the `RecActionView` class. This property is decorated with the `[ForeignKey("Id")]` attribute, establishing a foreign key relationship with the `Id` property. This change enables the `RecActionView` entity to reference an optional `RecAction` entity, enhancing the data model and supporting entity relationships.

src/ReC.Domain/Entities/RecActionView.cs

@@ -17,6 +17,9 @@ public class RecActionView
     [Column("ACTION_ID")]
     public required long Id { get; set; }
 
+    [ForeignKey("Id")]
+    public RecAction? RootAction { get; set; }
+
     [Column("PROFILE_ID")]
     public long? ProfileId { get; set; }