Fix more bug,Added support for the SQLite database.
1.Fixed an issue where `reload` failed to correctly modify the name of the ExpBook.
2.Added multilingual files and changed the default language file to English.
3.Added support for the SQLite database type; using MySQL is no longer mandatory.
4.Optimized database connections to prevent database overload.
5.Configuration validation has been added to prevent the entire plugin from crashing due to configuration errors; it will now revert to default values.
6.Added command completion.
7.Optimized the plugin size.