Add CrUX Ads Metrics

[cguirreri-politico]

Feature/improvement

Google has a new CrUX API specifically for ads metrics. It would be useful to have this as an included feature alongisde the current CrUX web vitals metrics.

https://developer.chrome.com/docs/ads/metrics

[soulgalore]

Sounds like a good idea, I will have a look.

[soulgalore]

It will look like this: