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

[cushon]

Note that this is currently a preview feature, there's a draft JEP to finalize the feature in Java 25: https://openjdk.org/jeps/8344700

[sormuras]

I wonder where GJF will put import MODULE; declarations in relation to the static and non-static block as described in https://google.github.io/styleguide/javaguide.html#s3.3-import-statements

3.3.3 Ordering and spacing
Imports are ordered as follows:

1. All static imports in a single block.
2. All non-static imports in a single block.

If there are both static and non-static imports, a single blank line separates the two blocks. There are no other blank lines between import statements.