Refactor ExtendedRefreshToken: public & add XML docs

Changed class access to public for wider use. Added XML documentation to the class and its properties, clarifying their purpose and usage. No changes to property types or structure; update focuses on accessibility and code clarity.

Author: Vadim Belov

Sources/EasyExtensions.EntityFrameworkCore/Database/ExtendedRefreshToken.cs

@@ -5,28 +5,57 @@
 
 namespace EasyExtensions.EntityFrameworkCore.Database
 {
+    /// <summary>
+    /// Represents a refresh token with extended metadata, including client device and location information, for
+    /// authentication scenarios.
+    /// </summary>
+    /// <remarks>This class extends the base refresh token functionality by associating additional context
+    /// such as IP address, user agent, authentication type, and geographic details. These properties can be used to
+    /// enhance security, auditing, or analytics related to token usage. The class is mapped to the 'refresh_tokens'
+    /// database table and enforces uniqueness on the token value.</remarks>
     [Table("refresh_tokens")]
     [Index(nameof(Token), IsUnique = true)]
-    internal class ExtendedRefreshToken : RefreshToken
+    public class ExtendedRefreshToken : RefreshToken
     {
+        /// <summary>
+        /// Gets or sets the IP address associated with the entity.
+        /// </summary>
         [Column("ip_address")]
         public IPAddress IpAddress { get; set; } = null!;
 
+        /// <summary>
+        /// Gets or sets the user agent string associated with the entity.
+        /// </summary>
         [Column("user_agent")]
         public string UserAgent { get; set; } = null!;
 
+        /// <summary>
+        /// Gets or sets the authentication type used for this entity.
+        /// </summary>
         [Column("auth_type")]
         public AuthType AuthType { get; set; }
 
+        /// <summary>
+        /// Gets or sets the country associated with the entity.
+        /// </summary>
         [Column("country")]
         public string? Country { get; set; }
 
+        /// <summary>
+        /// Gets or sets the region associated with the entity.
+        /// </summary>
         [Column("region")]
         public string? Region { get; set; }
 
+        /// <summary>
+        /// Gets or sets the name of the city associated with the entity.
+        /// </summary>
         [Column("city")]
         public string? City { get; set; }
 
+        /// <summary>
+        /// Gets or sets the name or identifier of the device associated with this entity.
+        /// </summary>
         [Column("device")]
         public string? Device { get; set; }
     }