feat(electron): recording popups (#11016)

Added a recording popup UI for the audio recording feature in the desktop app, improving the user experience when capturing audio from applications.

### What changed?

- Created a new popup window system for displaying recording controls
- Added a dedicated recording UI with start/stop controls and status indicators
- Moved audio encoding logic from the main app to a dedicated module
- Implemented smooth animations for popup appearance/disappearance
- Updated the recording workflow to show visual feedback during recording process
- Added internationalization support for recording-related text
- Modified the recording status flow to include new states: new, recording, stopped, ready

fix AF-2340

packages/frontend/apps/electron-renderer/webpack.config.ts

@@ -3,5 +3,6 @@ export const config = {
     app: './src/app/index.tsx',
     shell: './src/shell/index.tsx',
     backgroundWorker: './src/background-worker/index.ts',
+    popup: './src/popup/index.tsx',
   },
 };