#4 feat: Add WebSocket real-time support and Updated EA to fetch and upload data

WebSocket Real-time Support Implementation This PR adds comprehensive WebSocket functionality using Socket.io to provide real-time market data updates. Features Added: - ✅ Socket.io server integration with HTTP server - ✅ Real-time live price updates via WebSocket events - ✅ Real-time candle updates via WebSocket events - ✅ Client subscription/unsubscription system for symbols - ✅ Support for multiple concurrent client connections - ✅ Backward compatibility with existing REST APIs