fix: exclude hostname from clay-log json

[ealcantara22]

In some use cases, we do not want the application to ship logs with the "hostname" field populated as it can create conflict with other tools. For example, if present Datadog is forced to drop any host-related tags such as cluster name, etc. difficulting some filter capabilities.

see: DataDog/datadog-agent#14860

// default
let myLogger = init({ name: 'my-logger' });
myLogger('info', 'message text');

{"level":30,"time":1729715181162,"msg":"message text","pid":34323,"hostname":"MBP14M2.local","name":"my-logger","_label":"INFO","v":1}

// excluding the hostname
let myLogger = init({ name: 'my-logger', omitHost: true });
myLogger('info', 'message text');

{"level":30,"time":1729715193235,"msg":"message text","pid":34330,"name":"my-logger","_label":"INFO","v":1}

[james-owen]

Looks good. just took a look at the oddly named base option for pino https://getpino.io/#/docs/api?id=base-object