Refactor move docs (#8108)

* feat: [skip] generate readme script

* docs: [skip ci] update READMEs

* docs: [skip ci] fix code block type

* chore: [skip ci] move generator script

packages/babel-helper-plugin-utils/README.md

@@ -1,41 +1,19 @@
 # @babel/helper-plugin-utils
 
-The intention of this module is to provide a place for us to expose a
-standardized API layer over top of what Babel's core API provides on its own.
+> General utilities for plugins to use
 
-This is not aiming to implement APIs that are missing on a given Babel version,
-but it is means to provide clear error messages if a plugin is run on a version
-of Babel that doesn't have the APIs that the plugin is trying to use.
+See our website [@babel/helper-plugin-utils](https://new.babeljs.io/docs/en/next/babel-helper-plugin-utils.html) for more information.
 
-Every one of Babel's core plugins and presets will use this module, and ideally
-because of that its size should be kept to a miminum because this may or may
-not be deduplicated when installed.
+## Install
 
+Using npm:
 
-## Usage
-
-```js
-import { declare } from "@babel/helper-plugin-utils";
-
-export default declare((api, options, dirname) => {
-  return {};
-});
+```sh
+npm install --save @babel/helper-plugin-utils
 ```
 
+or using yarn:
 
-## What this does
-
-Currently, this plugin provides a few services to ensure that plugins function
-well-enough to throw useful errors.
-
-### `options` is always passed
-
-Babel 6 does not pass a second parameter. This frequently means that plugins
-written for Babel 7 that use `options` will attempt to destructure options
-out of an `undefined` value. By supplying the default, we avoid that risk.
-
-### `api.assertVersion` always exists
-
-Babel 6 and early betas of Babel 7 do not have `assertVersion`, so this
-wrapper ensures that it exists and throws a useful error message when not
-supplied by Babel itself.
+```sh
+yarn add --save @babel/helper-plugin-utils
+```