feat(auth): implemented users and user auth

#5 [Story] Create User Sessions

knockoutwhistweb/app/logic/PodGameManager.scala

@@ -0,0 +1,37 @@
+package logic
+
+import de.knockoutwhist.utils.events.SimpleEvent
+import model.sessions.PlayerSession
+
+import java.util.UUID
+import scala.collection.mutable
+
+object PodGameManager {
+  
+  private val sessions: mutable.Map[UUID, PlayerSession] = mutable.Map()
+  
+  def addSession(session: PlayerSession): Unit = {
+    sessions.put(session.id, session)
+  }
+  
+  def clearSessions(): Unit = {
+    sessions.clear()
+  }
+  
+  def identify(id: UUID): Option[PlayerSession] = {
+    sessions.get(id)
+  }
+  
+  def transmit(id: UUID, event: SimpleEvent): Unit = {
+    identify(id).foreach(_.updatePlayer(event))
+  }
+  
+  def transmitAll(event: SimpleEvent): Unit = {
+    sessions.foreach(session => session._2.updatePlayer(event))
+  }
+  
+  def listSessions(): List[PlayerSession] = {
+    sessions.values.toList
+  }
+
+}