fix: FRO-29 Websocket Communication (#104)

Reviewed-on: #104
Co-authored-by: Janis <janis.e.20@gmx.de>
Co-committed-by: Janis <janis.e.20@gmx.de>

knockoutwhistweb/app/dto/LobbyInfoDTO.scala

@@ -4,7 +4,7 @@ import dto.subDTO.UserDTO
 import logic.game.GameLobby
 import model.users.User
 
-case class LobbyInfoDTO(users: List[UserDTO], self: UserDTO, maxPlayers: Int)
+case class LobbyInfoDTO(gameId: String, users: List[UserDTO], self: UserDTO, maxPlayers: Int)
 
 object LobbyInfoDTO {
 
@@ -12,6 +12,7 @@ object LobbyInfoDTO {
     val session = lobby.getUserSession(user.id)
     
     LobbyInfoDTO(
+      gameId = lobby.id,
       users = lobby.getPlayers.values.map(user => UserDTO(user)).toList,
       self = UserDTO(session),
       maxPlayers = lobby.maxPlayers,