add eslint plugin html for linting js in html files (#4428)

* add eslint plugin html for linting js in html files

* fix linting

ale_linters/html/eslint.vim

@@ -0,0 +1,12 @@
+" Author: Victor Ananyev <vindex10@gmail.com>
+" Description: eslint for js snippets in HTML files
+
+
+call ale#linter#Define('html', {
+\   'name': 'eslint',
+\   'output_stream': 'both',
+\   'executable': function('ale#handlers#eslint#GetExecutable'),
+\   'cwd': function('ale#handlers#eslint#GetCwd'),
+\   'command': function('ale#handlers#eslint#GetCommand'),
+\   'callback': 'ale#handlers#eslint#HandleJSON',
+\ })

doc/ale-supported-languages-and-tools.txt

@@ -255,6 +255,7 @@ Notes:
   * `alex`
   * `angular`
   * `cspell`
+  * `eslint`
   * `fecs`
   * `html-beautify`
   * `htmlhint`

supported-tools.md

@@ -264,6 +264,7 @@ formatting.
   * [alex](https://github.com/get-alex/alex)
   * [angular](https://www.npmjs.com/package/@angular/language-server)
   * [cspell](https://github.com/streetsidesoftware/cspell/tree/main/packages/cspell)
+  * [eslint](https://github.com/BenoitZugmeyer/eslint-plugin-html)
   * [fecs](http://fecs.baidu.com/)
   * [html-beautify](https://beautifier.io/)
   * [htmlhint](http://htmlhint.com/)