feat(ui): Websocket

Started implementing functionality to Websocket.

knockoutwhistweb/app/util/mapper/NewTrickEventMapper.scala

@@ -0,0 +1,13 @@
+package util.mapper
+
+import de.knockoutwhist.events.global.NewTrickEvent
+import logic.game.GameLobby
+import play.api.libs.json.{JsObject, Json}
+
+object NewTrickEventMapper extends SimpleEventMapper[NewTrickEvent]{
+  override def id: String = "NewTrickEvent"
+
+  override def toJson(event: NewTrickEvent, gameLobby: GameLobby): JsObject = {
+    Json.obj()
+  }
+}