Worker support

[lifeart]

related: lifeart/ember-language-server#305

• unify worker/extension logic (right now to many duplicates)
• move worker bundling logic to prepare for worker bundling ember-language-server#306
• mark change as major (changes server api)
• take debug config from https:/microsoft/vscode-extension-samples/blob/main/lsp-web-extension-sample/.vscode/launch.json (add worker debug config #26)

[lifeart]

fetch('http://localhost:3000/static/devextensions/node_modules/%40lifeart/ember-language-server/dist/bundled/start-worker-server.js').then(async (result) => {
    new Worker('data:application/javascript,' + encodeURIComponent(await result.text()));
})

// https://www.npmjs.com/package/node-polyfill-webpack-plugin


var process = {
    env: {},
    argv: ''
  };
  var require = function() {
    console.log(...arguments);
  }
  t.useColors;
  i.deprecate is not a function

  // replace
  t.promisify=function(e){}

https://gist.github.com/lifeart/6d1279a6c4999d48b17f063faf735fc6