[Feature Request] Frontmatter Support in HTML Files

[frendly]

I would like to request support for YAML frontmatter in HTML files within @html-eslint/eslint-plugin.

This feature would allow developers to include metadata at the beginning of HTML files while maintaining proper linting functionality.

If it already works, tell me how to use it :)

1. @html-eslint/element-newline
   When saving files, extra indentation appears in frontmatter information

2. @html-eslint/indent
   Indentation for eleventyNavigation items collapses

like this

// index.html

---
title: Home page
eleventyNavigation:
  key: Main
  order: 1
---

<h1>Welcome</h1>

<button>Go away</button>

[yeonjuan]

Hi @frendly Thanks for the suggestion! I agree that this would be a nice feature to add.