Implement prepend/append

[HerringtonDarkholme]

Add prepend/append statements in fix

⭐ Suggestion

It is usually desirable to prepend/append extra content to a file during a code fix.
For example, setting up a top-level variable, importing a function and etc.

💻 Use Cases

Suppose we want to extract some repetitive code.

const result = () => {
  doSomeRepetitiveCode()
}

to

import { importedUtil } from 'utils' // note this line
const result = importedUtil()

The first line should import the extracted util function from another file.

---

Change console.log to logger.log

console.log('message')

to

import logger from 'logger'
logger.log('message')