feat: add Socket.IO client and useCallEvents hook for live CTI mode

src/lib/socket.ts

@@ -0,0 +1,22 @@
+import { io, Socket } from 'socket.io-client';
+
+const SIDECAR_URL = import.meta.env.VITE_SIDECAR_URL ?? 'http://localhost:4100';
+
+let socket: Socket | null = null;
+
+export const getSocket = (): Socket => {
+    if (!socket) {
+        socket = io(`${SIDECAR_URL}/call-events`, {
+            autoConnect: false,
+            transports: ['websocket'],
+        });
+    }
+    return socket;
+};
+
+export const disconnectSocket = () => {
+    if (socket) {
+        socket.disconnect();
+        socket = null;
+    }
+};