refactor: update type exports and improve type usage in tests

packages/artplayer/types/artplayer.d.ts

@@ -10,6 +10,8 @@ import type { Subtitle } from './subtitle'
 import type { Template } from './template'
 import type { Utils } from './utils'
 
+export type { Config, Events, I18n, Icons, Option, Player, Setting, SettingOption, Subtitle, Template, Utils }
+
 export default class Artplayer extends Player {
   constructor(option: Option, readyCallback?: (this: Artplayer, art: Artplayer) => unknown)