New Sniff: target="_blank"

## What problem would the enhancement address for VIP?
There's a potential issue with using `target="_blank"` and not using `rel="noopener"` or `rel="noreferrer"`.
See: https://web.dev/external-anchors-use-rel-noopener/

## Describe the solution you'd like

Maybe warn about this if we see `noopener` or `noreferrer` present?

## What code should be reported as a violation?

`Link`

## What code should *not* be reported as a violation?

`Link`

OR

`Link`

首先检查仓库中现有的 sniffs 和 PHP_CodeSniffer 规则，确认它们如何检查锚点属性。确认带有 target="_blank" 的 会被报告，除非 rel 包含 noopener 或 noreferrer，并确认两个符合要求的示例会被接受。

由索引模型根据 Issue 内容生成。