feat(websocket)!: Implement WebSocket connection and event handling

knockoutwhistweb/app/model/sessions/UserSession.scala

@@ -4,18 +4,16 @@ import de.knockoutwhist.events.player.{RequestCardEvent, RequestTieChoiceEvent,
 import de.knockoutwhist.utils.events.SimpleEvent
 import logic.game.GameLobby
 import model.users.User
-import org.apache.pekko.actor.{Actor, ActorRef}
-import play.api.libs.json.{JsObject, JsValue, Json}
-import util.WebsocketEventMapper
+import play.api.libs.json.JsObject
 
 import java.util.UUID
 import java.util.concurrent.locks.ReentrantLock
-import scala.util.{Failure, Success, Try}
+import scala.util.Try
 
 class UserSession(val user: User, val host: Boolean, val gameLobby: GameLobby) extends PlayerSession {
+  val lock: ReentrantLock = ReentrantLock()
   var canInteract: Option[InteractionType] = None
   var websocketActor: Option[UserWebsocketActor] = None
-  val lock: ReentrantLock = ReentrantLock()
 
   override def updatePlayer(event: SimpleEvent): Unit = {
     event match {
@@ -33,7 +31,7 @@ class UserSession(val user: User, val host: Boolean, val gameLobby: GameLobby) e
   override def id: UUID = user.id
 
   override def name: String = user.name
-  
+
   def resetCanInteract(): Unit = {
     canInteract = None
   }
@@ -49,5 +47,5 @@ class UserSession(val user: User, val host: Boolean, val gameLobby: GameLobby) e
     }
     lock.unlock()
   }
-  
+
 }