Add vscode settings

[gyagp]

Maybe this is more friendly for vscode users like me.

[gyagp]

@NingW101 Do you think if we can add vscode settings to make linter more automatic?

[NingW101]

@NingW101 Do you think if we can add vscode settings to make linter more automatic?

The developers using other editor | IDE still troubled by format issues. I think the key point is prompt developers when format does not match the rule since we have provided the npm run format command to help automatically format.

Actually we added the format as eslint rules, then linting check action will check the PR and report format error, but it seems not work right now, I'll check and fix it.

What's more, we can introduce husky to do linting check before developers git commit, then the PRs will not exist any linting errors.

[gyagp]

I also prefer husky for pre-commit hook ;) vscode setting could be complementary.