feat: migrate to new plugin api

Co-authored-by: Su-Yong <simssy2205@gmail.com>

src/plugins/downloader/index.ts

@@ -0,0 +1,36 @@
+import { DefaultPresetList, Preset } from './types';
+
+import style from './style.css?inline';
+
+import { createPluginBuilder } from '../utils/builder';
+
+export type DownloaderPluginConfig = {
+  enabled: boolean;
+  downloadFolder?: string;
+  selectedPreset: string;
+  customPresetSetting: Preset;
+  skipExisting: boolean;
+  playlistMaxItems?: number;
+}
+
+const builder = createPluginBuilder('downloader', {
+  name: 'Downloader',
+  restartNeeded: true,
+  config: {
+    enabled: false,
+    downloadFolder: undefined,
+    selectedPreset: 'mp3 (256kbps)', // Selected preset
+    customPresetSetting: DefaultPresetList['mp3 (256kbps)'], // Presets
+    skipExisting: false,
+    playlistMaxItems: undefined,
+  } as DownloaderPluginConfig,
+  styles: [style],
+});
+
+export default builder;
+
+declare global {
+  interface PluginBuilderList {
+    [builder.id]: typeof builder;
+  }
+}