Add support for custom item display preferences

Jellyfin.Data/Entities/CustomItemDisplayPreferences.cs

@@ -0,0 +1,80 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Jellyfin.Data.Entities
+{
+    /// <summary>
+    /// An entity that represents a user's custom display preferences for a specific item.
+    /// </summary>
+    public class CustomItemDisplayPreferences
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CustomItemDisplayPreferences"/> class.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="client">The client.</param>
+        /// <param name="preferenceKey">The preference key.</param>
+        /// <param name="preferenceValue">The preference value.</param>
+        public CustomItemDisplayPreferences(Guid userId, string client, string preferenceKey, string preferenceValue)
+        {
+            UserId = userId;
+            Client = client;
+            Key = preferenceKey;
+            Value = preferenceValue;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CustomItemDisplayPreferences"/> class.
+        /// </summary>
+        protected CustomItemDisplayPreferences()
+        {
+        }
+
+        /// <summary>
+        /// Gets or sets the Id.
+        /// </summary>
+        /// <remarks>
+        /// Required.
+        /// </remarks>
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        public int Id { get; protected set; }
+
+        /// <summary>
+        /// Gets or sets the user Id.
+        /// </summary>
+        /// <remarks>
+        /// Required.
+        /// </remarks>
+        public Guid UserId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the client string.
+        /// </summary>
+        /// <remarks>
+        /// Required. Max Length = 32.
+        /// </remarks>
+        [Required]
+        [MaxLength(32)]
+        [StringLength(32)]
+        public string Client { get; set; }
+
+        /// <summary>
+        /// Gets or sets the preference key.
+        /// </summary>
+        /// <remarks>
+        /// Required.
+        /// </remarks>
+        [Required]
+        public string Key { get; set; }
+
+        /// <summary>
+        /// Gets or sets the preference value.
+        /// </summary>
+        /// <remarks>
+        /// Required.
+        /// </remarks>
+        [Required]
+        public string Value { get; set; }
+    }
+}