Updating project to correct the following errors:

1. Using directive should appear within a namespace declaration
2. Use trailing comma in multi-line initializers

src/Jellyfin.Database/Jellyfin.Database.Implementations/Entities/Libraries/CustomItemMetadata.cs

@@ -3,19 +3,18 @@
 // </copyright>
 
 namespace Jellyfin.Database.Implementations.Entities.Libraries
+
+/// <summary>
+/// An entity containing metadata for a custom item.
+/// </summary>
+public class CustomItemMetadata : ItemMetadata
 {
     /// <summary>
-    /// An entity containing metadata for a custom item.
+    /// Initializes a new instance of the <see cref="CustomItemMetadata"/> class.
     /// </summary>
-    public class CustomItemMetadata : ItemMetadata
+    /// <param name="title">The title or name of the object.</param>
+    /// <param name="language">ISO-639-3 3-character language codes.</param>
+    public CustomItemMetadata(string title, string language) : base(title, language)
     {
-        /// <summary>
-        /// Initializes a new instance of the <see cref="CustomItemMetadata"/> class.
-        /// </summary>
-        /// <param name="title">The title or name of the object.</param>
-        /// <param name="language">ISO-639-3 3-character language codes.</param>
-        public CustomItemMetadata(string title, string language) : base(title, language)
-        {
-        }
     }
 }