Support editor.codeActionsOnSave

[auxves]

With the ESLint, TSLint, and StyleLint extensions, there are code actions that fix all auto-fixable problems when saving. It would be great if this extension supported it as well.

Example

// settings.json

{
  "editor.codeActionsOnSave": {
    "source.fixAll.xo": true
  }
}

[sheedy]

@arnohovhannisyan It works with these settings:

"xo.enable": true,
"xo.format.enable": true,
"editor.defaultFormatter": "samverschueren.linter-xo",
"[javascript]": {
  "editor.formatOnSave": true,
  "editor.codeActionsOnSave": {
    "source.fixAll": true
  },
  "editor.defaultFormatter": "samverschueren.linter-xo"
}

I also duplicate the [javascript] for [javascriptreact].