feat : websocket conifg 추가

backend/src/main/java/com/edufocus/edufocus/ws/config/WebSocketConfigurer.java

@@ -0,0 +1,25 @@
+package com.edufocus.edufocus.ws.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.messaging.simp.config.MessageBrokerRegistry;
+import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
+import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
+import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
+
+@Configuration
+@EnableWebSocketMessageBroker
+public class WebSocketConfigurer implements WebSocketMessageBrokerConfigurer {
+
+    @Override
+    public void configureMessageBroker(MessageBrokerRegistry registry) {
+        registry.enableSimpleBroker("/sub");
+        registry.setApplicationDestinationPrefixes("/pub");
+    }
+
+    @Override
+    public void registerStompEndpoints(StompEndpointRegistry registry) {
+        registry
+                .addEndpoint("/ws")
+                .setAllowedOrigins("*");
+    }
+}