feat(api): integrate leetcode.cn API endpoints

[jinzcdev]

• feat: add APIs for leetcode.cn endpoints
• test: add API tests for leetcode.cn endpoints

[Copilot]

Copilot reviewed 7 out of 16 changed files in this pull request and generated 1 comment.

Files not reviewed (9)

• src/graphql/leetcode-cn/problem-set.graphql: Language not supported
• src/graphql/leetcode-cn/problem.graphql: Language not supported
• src/graphql/leetcode-cn/question-of-today.graphql: Language not supported
• src/graphql/leetcode-cn/recent-ac-submissions.graphql: Language not supported
• src/graphql/leetcode-cn/user-contest-ranking.graphql: Language not supported
• src/graphql/leetcode-cn/user-problem-submissions.graphql: Language not supported
• src/graphql/leetcode-cn/user-profile.graphql: Language not supported
• src/graphql/leetcode-cn/user-progress-questions.graphql: Language not supported
• src/graphql/leetcode-cn/user-status.graphql: Language not supported

[JacobLinCool]

Hello, thanks for the massive contributions!

I've tested the tests without authentication, and they work well. (I don't have a LeetCode CN account, and I don't know why I can't receive the activation code...)

But I think it's okay to merge this. Thank you!

[JacobLinCool]

Oh, I forgot to mention—please use pnpm changeset to add and commit a changeset, so the version can be bumped correctly and the changelog will be generated automatically.

[changeset-bot]

🦋 Changeset detected

Latest commit: c9c774a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
leetcode-query	Minor

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[jinzcdev]

Oh, this seems to be a minor-level update. I'll resubmit it.