This PR adds the ability for the Tailwind language server
(`tailwindcss-language-server`) to be controlled by the
`language_servers` setting.
Now in your settings you can indicate that the Tailwind language server
should be used for a given language, even if that language does not have
the Tailwind language server registered for it already:
```json
{
"languages": {
"My Language": {
"language_servers": ["tailwindcss-language-server", "..."]
}
}
}
```
Release Notes:
- N/A