feat(api): Enhance event mappers to include GameLobby in JSON serialization

knockoutwhistweb/app/util/WebsocketEventMapper.scala

@@ -1,6 +1,7 @@
 package util
 
 import de.knockoutwhist.utils.events.SimpleEvent
+import logic.game.GameLobby
 import play.api.libs.json.{JsValue, Json}
 import tools.jackson.databind.json.JsonMapper
 import tools.jackson.module.scala.ScalaModule
@@ -24,10 +25,15 @@ object WebsocketEventMapper {
   // Register all custom mappers here
   registerCustomMapper(ReceivedHandEventMapper)
   
-  def toJson(obj: SimpleEvent): JsValue = {
-    val data = if (customMappers.contains(obj.id)) {
-      return customMappers(obj.id).toJson(obj)
-    }else Json.parse(mapper.writeValueAsString(obj))
+  def toJson(obj: SimpleEvent, gameLobby: GameLobby): JsValue = {
+    val data: Option[JsValue] = if (customMappers.contains(obj.id)) {
+      Some(customMappers(obj.id).toJson(obj))
+    }else {
+      None
+    }
+    if (data.isEmpty) {
+      return Json.obj()
+    }
     Json.obj(
       "id" -> ("request-" + java.util.UUID.randomUUID().toString),
       "event" -> obj.id,