Update UserRole enum values and replace Unknown with None

Replaced the Unknown value with None (set to 0) in the UserRole enum to represent the absence of options. Adjusted User and Admin values to 1 and 2, respectively, and updated related documentation comments accordingly.

Author: Vadim Belov

Sources/EasyExtensions/Models/Enums/UserRole.cs

@@ -12,20 +12,18 @@ namespace EasyExtensions.Models.Enums
     public enum UserRole
     {
         /// <summary>
-        /// Indicates that the value is unknown or not specified.
+        /// Indicates that no options are set.
         /// </summary>
-        /// <remarks>Use this value when the actual value cannot be determined or is not applicable. This
-        /// is typically used as a default or placeholder value.</remarks>
-        Unknown = 1,
+        None = 0,
 
         /// <summary>
         /// Represents a standard user account with typical permissions and access rights.
         /// </summary>
-        User = 2,
+        User = 1,
 
         /// <summary>
         /// Specifies an administrator role with elevated permissions.
         /// </summary>
-        Admin = 4,
+        Admin = 2,
     }
 }