Add module-info definitions for the Java libraries

[SamCarlberg]

Java 23 added support for module imports, which would allow users to use eg import module wpilib.units to import every type from the wpiunits library instead of needing a separate import for each class. It effectively acts like a star import on every package exported by the module. This could be helpful for new programmers who aren't familiar with the library, and for example projects and documentation.

https://openjdk.org/jeps/476

While module imports will need the new MRC for a compatible JDK version, the library can still be modularized on our current JDK