refactor: src/game 全部移入 monorepo

packages/common/src/index.ts

@@ -1 +1,2 @@
 export * from './logger';
+export * from './utils';

packages/common/src/utils.ts

@@ -0,0 +1,3 @@
+export function sleep(time: number) {
+    return new Promise(res => setTimeout(res, time));
+}