Move GetCustomTagDelimiters to Extension

MediaBrowser.Model/Extensions/LibraryOptionsExtension.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Linq;
+using MediaBrowser.Model.Configuration;
+
+namespace MediaBrowser.Model.Extensions;
+
+/// <summary>
+/// Extensions for <see cref="LibraryOptions"/>.
+/// </summary>
+public static class LibraryOptionsExtension
+{
+    /// <summary>
+    /// Get the custom tag delimiters.
+    /// </summary>
+    /// <param name="options">This LibraryOptions.</param>
+    /// <returns>CustomTagDelimiters in char[].</returns>
+    public static char[] GetCustomTagDelimiters(this LibraryOptions options)
+    {
+        ArgumentNullException.ThrowIfNull(options);
+
+        return options.CustomTagDelimiters.Select<string, char?>(x =>
+        {
+            var isChar = char.TryParse(x, out var c);
+            if (isChar)
+            {
+                return c;
+            }
+
+            return null;
+        }).Where(x => x is not null).Select(x => x!.Value).ToArray();
+    }
+}