Add annotationLibrary to java configuration

[cache-sk]

There are two issues in java client since version 20.0.0 about problems with native build due not registering model during processAot task:

• Version 20.0.0 is not registering model in processAot task java#3134
• NullPointerException when compiled to Spring Native binary java#3271

Main problem is missing swagger annotation ApiModel, which is used to identify model classes in AOT Processor.

I have recently discovered in openapi generator docs, that annotationLibrary property now defaults to none.

So, solution for that issues should be adding line:

<annotationLibrary>swagger1</annotationLibrary>

to java.xml near line where is useJakartaEe set to true.

I tried it and it did indeed generate swagger ApiModel annotations.

I assume that it will also solve the mentioned issues in the java client after regenerating models.

[brendandburns]

Happy to take a PR for this.

Thanks!

[cache-sk]

@brendandburns Created PR #271 as requested..