Update V0.1

This update includes the following additions:

1. Fix the issue of emojis not displaying properly on the web version.
2. Add a countdown feedback after falling.
3. Fix the abnormal countdown situation when it starts after ending.
4. Fix the bug where the game continues even after the level ends.

此次更新增加一下内容

1. 修复web端emoji不正常显示
2. 增加下落后倒计时反馈
3. 修复倒计时结束，开始触发时倒计时不正常情况
4. 修复关卡结束后游戏仍然继续的bug