Describe how to install and use `jextract` from [jdk.java.net](https://jdk.java.net/jextract/) either directly in the README.md file or create a [Wiki](https://github.com/oracle-actions/setup-java/wiki) page and link that.
Describe how to install and use
jextractfrom jdk.java.net either directly in the README.md file or create a Wiki page and link that.