Support Module Import Declarations (JEP 476, JDK 23)

[sebastiaanspeck]

Consider the following code:

// this will import e.g. all the classes from package java.util, java.util.stream, java.io, java.lang, java.nio.file
import module java.base;

When trying to use google-java-format 1.24.0, this results in: com.google.googlejavaformat.java.FormatterException: 2:1: error: expected token: 'module'; generated java instead