Add colors!

[mcollina]

As titled, it would be awesome if this transport added colors!

[Uzlopak]

Do you have a code example on how you would use it?
How many colors?

[mcollina]

Maybe check out pino-colada and pino-pretty for inspiration?

[mcollina]

I've been trying to have one-line-logger be colored by default, but I couldn't make it work.

What I would expect it's something slightly different and "nicer" to read.

This is the output of pino-pretty:

I would expect this module to retain the color of the level.

This is with the default settings:

However I need to force a colorize: true option to get it to where it should be:

const fastify = require('fastify')({
  logger: {
    transport: {
      target: './index.js',
      options: {
        colorize: true,
      }
    }
  }
})

There should not be a need to foce colorize: true.

[mcollina]

cc @synapse @simoneb

[synapse]

@mcollina @simoneb create a new PR here #42 that enables colors automatically.