Add CO2 information to Analytics

[mgifford]

What kind of issue?

• Feature Request?
• Bug

User story

A user should be able to see the CO2 impact is for the sites that are being monitored here.

This could include information on usage of renewable energy by the data centers being used, but also looking at the average page size #894 and calculating how much CO2 on average is being used to transmit and display that page. There may be other information available such as time on page, but not sure how much is being collected.

A reasonable estimate could be made and included with this dashboard.

Acceptance Criteria

• A panel allowing per agency information about average CO2 produced per page per agency
• A clear indication of which sites have CDN & server hosting that is powered by renewable energy

Notes

Much of the information is available at https://www.thegreenwebfoundation.org/

and also from https://observablehq.com/@mrchrisadams/carbon-footprint-of-sending-data-around and https://digital.gov/2015/09/16/speed-matters-optimizing-your-website-for-maximum-performance/

This aligns with (EO 14057)