Merge remote-tracking branch 'origin/feat/34' into feat/34

# Conflicts:
#	backend/src/main/java/io/f1/backend/domain/game/websocket/service/SessionService.java

Author: sehee123

backend/src/main/java/io/f1/backend/domain/game/model/Room.java

@@ -51,7 +51,8 @@ public Room(Long id, RoomSetting roomSetting, GameSetting gameSetting, Player ho
         this.host = host;
     }
 
-    public void addValidatedUserId(Long userId) {validatedUserIds.add(userId);
+    public void addValidatedUserId(Long userId) {
+        validatedUserIds.add(userId);
     }
 
     public int getCurrentUserCnt() {

backend/src/main/java/io/f1/backend/domain/game/websocket/eventlistener/WebsocketEventListener.java

@@ -39,9 +39,9 @@ public void handleSubscribeListener(SessionSubscribeEvent event) {
 
         String sessionId = getSessionId(message);
 
-        String destination =  getRoomSubscriptionDestination(message);
+        String destination = getRoomSubscriptionDestination(message);
 
-        //todo 인덱스 길이 유효성 추가
+        // todo 인덱스 길이 유효성 추가
         String[] subscribeType = destination.split("/");
 
         if (subscribeType[2].equals("room")) {