Support elixir and phoenix heex files in neovim

Author: patryk-s

packages/tailwindcss-language-service/src/util/languages.ts

@@ -8,13 +8,15 @@ export const htmlLanguages: string[] = [
   'django-html',
   'edge',
   'ejs',
+  'elixir',
   'erb',
   'gohtml',
   'GoHTML',
   'gohtmltmpl',
   'haml',
   'handlebars',
   'hbs',
+  'heex',
   'html',
   'HTML (Eex)',
   'HTML (EEx)',