WIP: fetch problem tags from GraphQL & sort problems by natural order

[AerysNan]

Here is the corresponding issue.

Updates

1. Fetch problem tags through GraphQL API instead of hardcoding them.
2. Use natural-orderBy to sort the problems by their frontend ID.

Problems

Currently vscode-leetcode relies on leetcode-cli's console output, which may restrict the scalability. Though leetcode-cli can fetch tags and store them in the cache, vscode-leetcode still cannot get them unless we output tag information to the console. But that would make the console message overwhelming.

• So should we let vscode-leetcode visit leetcode-cli's cache file?

[AerysNan]

Might need some suggestions. @yihong0618 @jdneo

[yihong0618]

@AerysNan can we avoid using natural-orderBy package just write a function? And I think jdneo is a little busy, we can wait for him to review.

[AerysNan]

@AerysNan can we avoid using natural-orderBy package just write a function? And I think jdneo is a little busy, we can wait for him to review.

Sure, I'll consider it.