feat(game): 添加游戏房间菜单和托管功能

- 引入机器人和退出图标资源
- 实现游戏房间顶部菜单触发器和弹出菜单
- 添加托管模式切换功能
- 实现退出房间功能
- 添加全局点击和ESC键关闭菜单事件监听
- 优化菜单动画效果和交互反馈
- 移除侧边按钮区域的聊天、赞赏和开局按钮
- 调整时钟位置以适应新菜单布局

src/assets/images/icons/exit.svg

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