feat(electron): add editMenu to enable copy/paste keyboard shortcuts

- Add 'editMenu' role to AppMenuBarMenuTemplate in setup.ts and index.ts
- Enables standard keyboard shortcuts (Cmd+C, Cmd+V, etc.) in Electron app
- Fixes issue where copy/paste shortcuts were not working in text inputs
- Maintains existing clipboard service functionality for programmatic operations

Resolves keyboard shortcut functionality for better user experience in desktop app.

electron/src/setup.ts

@@ -53,6 +53,7 @@ export class ElectronCapacitorApp {
   ];
   private AppMenuBarMenuTemplate: (MenuItem | MenuItemConstructorOptions)[] = [
     { role: process.platform === 'darwin' ? 'appMenu' : 'fileMenu' },
+    { role: 'editMenu' },
     { role: 'viewMenu' },
   ];
   private mainWindowState;