A modern programming language that makes developers happier.

kotlinlang

What is this module there for: <https://github.com/xetra11/compose-jb/tree/master/components>
Is it for people to share components or will these components be introduced to the next CfD releases?

Jetbrains needs a place to implement and iterate on their own widgets, as they also intend to use Compose themselves for Jetbrains products.  These widgets are not necessarily intended to merge upstream into AOSP, but would most likely be distributed as separate artifacts for use internally at Jetbrains and also for any third parties to use if they want to.