Make it easier to run a specific audit category from CLI

My use case is to run only the SEO audits from the LH CLI. Disabling non-SEO audits would help speed up the test. Additionally, disabling irrelevant things like network throttling could help with audit performance.

Strawman proposal: --audit_categories=seo, --audit_categories=seo,perf

cc @kdzwinel

[patrickhulce]

love it, this would be fixed by the broader effort to unify the config and CLI settings which I’ve got a branch in progress to do 😃 it would look like

--only-categories=seo --only-categories=performance --only-audits=works-offline which would be equivalent of

{
  extends: 'lighthouse:default',
  settings: {
    onlyCategories: ['seo', 'performance'],
    onlyAudits: ['works-offline'],
  }
} 

[patrickhulce]

@lluia This is a built-in feature of yargs that does the repeated categories that way. How about you file an issue with the feature request for discussion, but I think we’d love your help 😃