A basic one line format

[TommyDew42]

closes fastify/fastify#4027

How does the log look like

YYYY-MM-dd HH:mm:ss.SSSTZ - <level> - <method> <route path> - <message>

The logs look like this:

Unit tests

The following unit tests are included:

• fastify log
  • log of server being started
  • log of incoming request and response
  • user custom log
• main function messageFormat
  • a basic logDescriptor without the req object
  • a basic logDescriptor with the req object

---

I believe without doing anything, we have already allowed the following usage:

fastify({
  logger: {
    transport: 'one-line-logger'
  }
})

It's because pino uses require.resolve('one-line-logger') to look for the path to main file of this package.

Checklist

• [x] run npm run test
• [x] tests and/or benchmarks are included
• [x] documentation is changed or added
• [x] commit message and code follows the Developer's Certification of Origin and the Code of conduct

[TommyDew42]

Also updated the PR description for the timezone and color!

[TommyDew42]

@mcollina ops sorry pushed a commit about readme. 😓 can you help run check again?