Add an accompanying example of a file for the `importMap` option example (#2791)
Add an accompanying example of a file for the `importMap` option example (#2791)

* Add @emotion/babel-plugin importMap example

* Update packages/babel-plugin/README.md

Co-authored-by: Mateusz Burzyński <5b9004dd2ee029967eea13d63372fedd80fa115f@gmail.com>
emotion-js/emotion,emotion-js/emotion,emotion-js/emotion,emotion-js/emotion