Prepared Seperation of Database components for future multi provider support

Jellyfin.Database/Jellyfin.Database.Implementations/ModelConfiguration/UserDataConfiguration.cs

@@ -0,0 +1,23 @@
+using System;
+using Jellyfin.Data.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace Jellyfin.Server.Implementations.ModelConfiguration;
+
+/// <summary>
+/// FluentAPI configuration for the UserData entity.
+/// </summary>
+public class UserDataConfiguration : IEntityTypeConfiguration<UserData>
+{
+    /// <inheritdoc/>
+    public void Configure(EntityTypeBuilder<UserData> builder)
+    {
+        builder.HasKey(d => new { d.ItemId, d.UserId, d.CustomDataKey });
+        builder.HasIndex(d => new { d.ItemId, d.UserId, d.Played });
+        builder.HasIndex(d => new { d.ItemId, d.UserId, d.PlaybackPositionTicks });
+        builder.HasIndex(d => new { d.ItemId, d.UserId, d.IsFavorite });
+        builder.HasIndex(d => new { d.ItemId, d.UserId, d.LastPlayedDate });
+        builder.HasOne(e => e.Item);
+    }
+}