Add support for sync: true as option

[mcollina]

Fixes: https://github.com/pinojs/pino-pretty/issues/296

[mcollina]

cc @onkeltem

[OnkelTem]

Great, thanks. It works:

import pino from 'pino';
import pretty from 'pino-pretty';
const logger = pino(pretty({sync: true}));
logger.info('Line 1');
console.log('Line 1');
logger.info('Line 2');
console.log('Line 2');
logger.info('Line 3');
console.log('Line 3');

Output:

$ npx ts-node log-test.ts 
[1642734910384] INFO (15467 on fractal): Line 1
Line 1
[1642734910386] INFO (15467 on fractal): Line 2
Line 2
[1642734910386] INFO (15467 on fractal): Line 3
Line 3

Before it was:

$ npx ts-node log-test.ts 
Line 1
Line 2
Line 3
[1642735523945] INFO (19553 on fractal): Line 1
[1642735523946] INFO (19553 on fractal): Line 2
[1642735523946] INFO (19553 on fractal): Line 3