Try Google Consent Mode for GDPR banner

This is to help improve analytics reporting now that we have a GDPR Banner and people can opt out.

[Google Consent Mode](https://docs.osano.com/google-consent) uses [behavioral modeling](https://support.google.com/analytics/answer/11161109?hl=en#:~:text=Behavioral%20modeling%20for%20consent%20mode%20uses%20machine%20learning%20to%20model,while%20respecting%20your%20users'%20privacy.) to model the behavior of people that opt out of analytics after similar profiles that opt into analytics.