feat: Extend default preamble to contain get-name and find-parent.

Jellyfin.Plugin.SmartPlaylist/Lisp/Interpreter.cs

@@ -263,7 +263,7 @@ namespace Jellyfin.Plugin.SmartPlaylist.Lisp {
         private static Type? GetType(string name) {
             return Type.GetType(
                 name,
-                (name) => { return AppDomain.CurrentDomain.GetAssemblies().Where(z => z.FullName == name.FullName).FirstOrDefault(); },
+                (name) => { return AppDomain.CurrentDomain.GetAssemblies().Where(z => (z.FullName != null) && z.FullName.StartsWith(name.FullName)).FirstOrDefault(); },
                 null,
                 true
             );

Jellyfin.Plugin.SmartPlaylist/PluginConfiguration.cs

@@ -37,7 +37,9 @@ namespace Jellyfin.Plugin.SmartPlaylist {
                   (invoke (lower (car (getitems item "Name"))) "Contains" (list (lower x)))))
               (define is-favourite is-favorite)
               (define all-genres (lambda (want have) (all (lambda (x) (is-genre x have)) want)))
-              (define any-genres (lambda (want have) (any (lambda (x) (is-genre x have)) want))))
+              (define any-genres (lambda (want have) (any (lambda (x) (is-genre x have)) want)))
+              (define get-name (lambda (x) (car (getitems x "Name"))))
+              (define find-parent (lambda (typename) (invoke-generic item "FindParent" nil (list typename)))))
             """;
         }
         public string InitialProgram { get; set; }