Configure CircleCI to publish artifacts to Maven Central (#34983)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/34983

This sets up our CircleCI logic to publish artifacts to Maven Central.
I will check if tomorrow's nightly successfully landed on Maven Central
Snapshot repository.

I've added a --dry-run to the the close and release step of the publishing
to avoid accidentally publishing to Maven Central. We'll remove this if
we decide to go with the Maven Central publishing.

Changelog:
[Internal] [Changed] - Configure CircleCI to publish artifacts to Maven Central

Reviewed By: jacdebug, huntie

Differential Revision: D40377691

fbshipit-source-id: 36a74074ea95097bb7268352e40f4d2670f3cd65