feat: add daily challenge problem pick (#919)

[Icathian-Rain]

• feat: add daily chanllenge problem pick, both work on us and cn endpoint

details:

• add a new command: onCommand:leetcode.pickDaily
• add a new menu view: leetcode.pickDaily
• implement the command leetcode.pickDaily in src/commands/show.ts
• add a new function queryDailyProblem in src/quest/query-daily-problem.ts
• add two new util functions getDailyQueryStr and getDailyProblemID in src/shared.ts which are used to adapt to us and cn endpoint

[Icathian-Rain]

This is my first time to pull request. Feel free to give me some suggestions 😃

[sbycrosz]

I successfully installed it using these instructions. It works perfectly! Thanks 🙏