Refactored ItemValue structure

Jellyfin.Data/Entities/ItemValueMap.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+
+namespace Jellyfin.Data.Entities;
+
+/// <summary>
+/// Mapping table for the ItemValue BaseItem relation.
+/// </summary>
+public class ItemValueMap
+{
+    /// <summary>
+    /// Gets or Sets the ItemId.
+    /// </summary>
+    public required Guid ItemId { get; set; }
+
+    /// <summary>
+    /// Gets or Sets the ItemValueId.
+    /// </summary>
+    public required Guid ItemValueId { get; set; }
+
+    /// <summary>
+    /// Gets or Sets the referenced <see cref="BaseItemEntity"/>.
+    /// </summary>
+    public required BaseItemEntity Item { get; set; }
+
+    /// <summary>
+    /// Gets or Sets the referenced <see cref="ItemValue"/>.
+    /// </summary>
+    public required ItemValue ItemValue { get; set; }
+}