send game hash to server each second

src/server/Client.ts

@@ -1,9 +1,12 @@
 import WebSocket from "ws";
 import { ClientID } from "../core/Schemas";
+import { Tick } from "../core/game/Game";
 
 export class Client {
   public lastPing: number;
 
+  public hashes: Map<Tick, number> = new Map();
+
   constructor(
     public readonly clientID: ClientID,
     public readonly persistentID: string,