Add a utility to identify Roarr location

[gajus]

I start pretty much every file with a variation of:

import Logger from '../Logger';

const log = Logger.child({
  namespace: 'createUpstreamHttpClientConfiguration',
});

namespace is most of the time the name of the file.

I am wondering if we could provide a utility to automate this, e.g.

import log from 'roarr.macro';

that would transpile to a version above.

Logger file is usually simply used to add the package name to the context. That could be pulled from package.json or we could resolve location of the Logger.js file to always use as a base.