Export 'persistAudit' from audit api module to support custom lighthouse scripts

[dmckernanacv]

Hello, I've got a custom lighthouse script which runs outside of the audit service, however I would like to have it reported / tracked by the audit service.

To do this I'm installing this package as a dependency of my lighthouse script, but I need to make use of the 'persistAudit' function from the audit api module: https://github.com/spotify/lighthouse-audit-service/blob/master/src/api/audits/index.ts

Seeing as the other functions are exported, can this be added to the export list? It would allow me to upload the results of an independent lighthouse run to the lighthouse audit service database... Here is my relevant code snippet:

const lhAudit = require('@spotify/lighthouse-audit-service');
const uuid = require('uuid');
const pg = require("pg");
const lighthouse = require('lighthouse');

/* REDACTED */

// A custom run of lighthouse using the official lighthouse package
const result = await lighthouse(url, flags, config);

if (process.env.USE_DB === "true") {
    // Report to lhAuditService
    const audit = lhAudit.Audit.build({
        id: uuid.v4(),
        url: result?.lhr.requestedUrl,
        timeCreated: new Date(result?.lhr.fetchTime),
        timeCompleted: nowDate,
        report: result?.lhr
    });
    await lhAudit.persistAudit(        // This is what I want to do
        new pg.Pool({
            host: process.env.DB_HOST,
            port: process.env.DB_PORT,
            database: process.env.DB_NAME,
            user: process.env.DB_USERNAME,
            password: process.env.DB_PASSWORD
        }),
        audit
    );
}

As a workaround I've copied the source for persistAudit to this script.