require-buffer lint fixer

Partially Fixes #16636 (closed) (adds the require-buffer lint fixer).

If the buffer module is not required while Buffer is used, require the buffer module as follows:

const { Buffer } = require('buffer');

• If the file has a 'use strict'; line, add the require after it on a separate line.
• If the file does not have any (currently impossible with the strict rule) add it after the first comment and before the real code starts.

Checklist

• tests and/or benchmarks are included
• commit message follows commit guidelines

Affected core subsystem(s)

tools