Adds the possibility to override message IDs during extraction both for.json and.js output by providing an override function with the signature(id: string, defaultMessage:string, description: string|object) => string

Example:

transform(path.join(fixtureDir, 'actual.js'), {    overrideIdFn: (id, defaultMessage, description) => {        return `HELLO.${id}.${defaultMessage.length}.${typeof description}`;    },});