fix : unify dto conversion

game.events.ts

@@ -10,11 +10,15 @@ export class GameDeleteEvent {
 
 export class GameJoinEvent {
   type = 'joingame';
-  constructor(public player: PlayerResponseDTO) {}
+  constructor(public player: PlayerResponseDTO) {
+    this.player = new PlayerResponseDTO(player);
+  }
 }
 
 export class GameLeaveEvent {
   type = 'leavegame';
   gameId?: number;
-  constructor(public player: PlayerResponseDTO) {}
+  constructor(public player: PlayerResponseDTO) {
+    this.player = new PlayerResponseDTO(player);
+  }
 }