Support html parser

[seeARMS]

Need to use HTML parser to format HTML files: prettier/prettier#1882 (comment)

Currently only babylon and flow are supported parsers for coc-prettier

[mblarsen]

What needs to be done to support the html-parser. The vetur plugin has something like:

vetur.format.defaultFormatter.css
vetur.format.defaultFormatter.js
vetur.format.defaultFormatter.html
.. and so on

Are you thinking something in lines of that?

prettier.parser = whatever the default is
prettier.parserOverride.html = html

and maybe from tailwind:

tailwindCSS.htmlLanguages = [
  html,
  blade,
  ejs
]

Just thoughts.