feat: initial commit with Express server and Socket.IO integration

- Added package.json for project metadata and dependencies
- Created public/index.html for the front-end interface
- Implemented server.js to set up an Express server with Socket.IO for real-time communication

server.js

@@ -0,0 +1,36 @@
+const express = require('express');
+const http = require('http');
+const socketIo = require('socket.io');
+
+const app = express();
+const server = http.createServer(app);
+const io = socketIo(server, {
+    cors: {
+        origin: "*",
+        methods: ["GET", "POST"]
+    }
+});
+
+app.use(express.static('public'));
+
+app.get('/', (req, res) => {
+    res.sendFile(__dirname + '/index.html');
+});
+
+io.on('connection', (socket) => {
+    console.log('New client connected:', socket.id);
+
+    socket.on('disconnect', () => {
+        console.log('Client disconnected:', socket.id);
+    });
+
+    socket.on('message', (data) => {
+        console.log('Message received:', data);
+        io.emit('message', data);
+    });
+});
+
+const PORT = process.env.PORT || 3000;
+server.listen(PORT, () => {
+    console.log(`Server running on port ${PORT}`);
+});