feat: migration to TypeScript FINAL

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

plugins/quality-changer/back.ts

@@ -0,0 +1,13 @@
+import { ipcMain, dialog } from 'electron';
+
+export default () => {
+  ipcMain.handle('qualityChanger', async (_, qualityLabels: string[], currentIndex: number) => await dialog.showMessageBox({
+    type: 'question',
+    buttons: qualityLabels,
+    defaultId: currentIndex,
+    title: 'Choose Video Quality',
+    message: 'Choose Video Quality:',
+    detail: `Current Quality: ${qualityLabels[currentIndex]}`,
+    cancelId: -1,
+  }));
+};