Enhance User entity with required properties and updates

- Added conditional compilation for .NET Framework.
- Made `GeneralViewer`, `WanEnvironment`, and `DeletedWho` properties required with appropriate attributes.
- Renamed `UseridFkIntEcm` to `UserIdFkIntEcm` and marked it as required.
- Changed `DeletedWhen` to a non-nullable `DateTime`.
- Removed previously ignored columns, activating them in the class definition.

DigitalData.UserManager.Domain/Entities/User.cs

@@ -1,6 +1,9 @@
 using System.ComponentModel;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+#if NETFRAMEWORK
+using System;
+#endif
 
 namespace DigitalData.UserManager.Domain.Entities
 {
@@ -84,27 +87,33 @@ namespace DigitalData.UserManager.Domain.Entities
         [Column("ACTIVE")]
         public bool Active { get; set; }
 
-        #region IGNORED COLUMNS
-        //[Required]
-        //[Column("GENERAL_VIEWER")]
-        //[StringLength(30)]
-        //[DefaultValue("NONE")]
-        //public string GeneralViewer { get; set; }
+        [Required]
+        [Column("GENERAL_VIEWER")]
+        [StringLength(30)]
+        [DefaultValue("NONE")]
+        public
+#if NET7_0_OR_GREATER
+            required
+#endif
+            string GeneralViewer { get; set; }
 
-        //[Required]
-        //[Column("WAN_ENVIRONMENT")]
-        //public bool WanEnvironment { get; set; }
+        [Required]
+        [Column("WAN_ENVIRONMENT")]
+        public bool WanEnvironment { get; set; }
 
-        //[Required]
-        //[Column("USERID_FK_INT_ECM")]
-        //public int UseridFkIntEcm { get; set; }
+        [Required]
+        [Column("USERID_FK_INT_ECM")]
+        public int UserIdFkIntEcm { get; set; }
 
-        //[Column("DELETED_WHEN")]
-        //public DateTime? DeletedWhen { get; set; }
+        [Column("DELETED_WHEN")]
+        public DateTime DeletedWhen { get; set; }
 
-        //[Column("DELETED_WHO")]
-        //[StringLength(50)]
-        //public string? DeletedWho { get; set; }
-        #endregion
+        [Column("DELETED_WHO")]
+        [StringLength(50)]
+        public
+#if NET7_0_OR_GREATER
+            required
+#endif
+            string DeletedWho { get; set; }
     }
 }