Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Motivation

Google introduced Google Analytics 4 and is going to sunset its former analytics system in July 2023

https://blog.google/products/marketingplatform/analytics/prepare-for-future-with-google-analytics-4/

Analytics data will not be migrated to the new system

For sites that want to migrate to Analytics 4 and keep historical data, they can run both analytics side-by-side so when the former analytics system is shut down, they have enough historical data

For these reasons, we should not wait until the final deadline to support Google Analytics 4 in Docusaurus, and allow sites to seamlessly/incrementally migrate to Analytics 4.

Self-service

• I'd be willing to do some initial work on this proposal myself.