reimplement of https://github.com/animus-coop/vscode-elixir-formatter.git
run mix format for elixir
Features
Help running mix format - to format file
Requirements
1 - Installed elixir
Configuration
.vscode/settings.json
{
  "elixirLS.suggestSpecs": false,
  "elixirLS.dialyzerEnabled": true,
  "elixirLS.signatureAfterComplete": false,
  "elixirLS.fetchDeps": false,
  "editor.formatOnSave": true,
  "files.associations": {
    "*.heex": "phoenix-heex"
  },
  "files.exclude": {
    "**/_build": true,
    "**/deps": true,
    "**/priv/static": true,
    "**/.elixir_ls": true
  },
  "[elixir]": {
    "editor.formatOnSave": true,
    "editor.defaultFormatter": "tunchamroeun.mix-format"
  },
  "[phoenix-heex]": {
    "editor.formatOnSave": true,
    "editor.defaultFormatter": "tunchamroeun.mix-format"
  },
  "emmet.includeLanguages": {
    "elixir": "html",
    "phoenix-heex": "html"
  },
  "emmet.triggerExpansionOnTab": true
}