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

knockoutwhistweb/app/util/mapper/KickEventMapper.scala

@@ -0,0 +1,19 @@
+package util.mapper
+
+import controllers.routes
+import events.KickEvent
+import model.sessions.UserSession
+import play.api.libs.json.{JsObject, Json}
+
+object KickEventMapper extends SimpleEventMapper[KickEvent] {
+
+  override def id: String = "KickEvent"
+
+  override def toJson(event: KickEvent, session: UserSession): JsObject = {
+    Json.obj(
+      "url" -> routes.MainMenuController.mainMenu().url,
+      "content" -> views.html.mainmenu.creategame(Some(session.user)).toString,
+    )
+  }
+
+}