Add Paarrot Stream Deck Plugin with core functionality

- Implemented main plugin structure including manifest, HTML, and JavaScript files.
- Added actions for toggling mute, toggling deafen, changing channels, sending messages, and getting status.
- Created property inspector for changing channels and sending messages.
- Developed SVG icons for actions and status display.
- Established WebSocket connection for communication with the Stream Deck.
- Implemented API calls to interact with the Paarrot voice chat application.
- Added validation script to ensure proper plugin structure and manifest compliance.
- Included test Electron application for window creation and loading content.

electron/main.js

@@ -183,7 +183,7 @@ if (!gotTheLock) {
 
 // Development mode detection
 const isDev = process.env.NODE_ENV === 'development' || !app.isPackaged;
-const VITE_DEV_SERVER = 'http://localhost:8080';
+const VITE_DEV_SERVER = 'http://localhost:38347';
 const PORT = 44548;
 
 // Helper to get correct icon path in dev vs packaged app