Investigate JEP 334: JVM Constants API

[tgodzik]

JEP 334 introduced JVM Constants API, which at a glance seems useful to Scala. Especially since in the description it's mentioned:

Compilers and offline transformers (such as jlink plugins) need to describe classes and members for classes that cannot be loaded into the running VM. Compiler plugins (such as annotation processors) similarly need to describe program elements in symbolic terms.

Since we are planning to update to a newer JDK at an unspecified future I hope we can figure out if this is in any way useful for us.

And if we can actually use them or whether it will be impossible for us.

Introduced in JDK 12