feat(api): Implemented session closed and kick event via websocket

knockoutwhistweb/app/events/KickEvent.scala

@@ -0,0 +1,9 @@
+package events
+
+import model.users.User
+
+case class KickEvent(user: User) extends UserEvent(user) {
+  
+  override def id: String = "KickEvent"
+
+}