Update @starcatmeow/vjudge-api to v0.5.0, fix #2.
Manually store cookies to avoid unexpected errors.
Change the request method from puppeteer to actual HTTP API to provide better compatibility and performance.
Features:
- Check login status & auto relogin before requesting, to avoid session expiration.
- Display additional info (e.g. compiler log) of submission.
将请求方式从之前的Puppeteer模拟操作更换为HTTP API，带来更好的兼容性及性能
新功能：
- 在发起请求前检查登录状态，避免因会话过期造成的问题
- 可以查看提交的附加信息（如编译日志）
Complete basic features - view contests, problems in contests, and submit code.
完成基本功能（查看比赛、比赛题目、提交代码）