Various cleanups

[gsmet]

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[gsmet]

@stuartwdouglas FYI, I included the doc infra I put together for my Quarkiverse projects: it's now included in the Maven build and you can check the generated output in the docs/ project. Also if you end up adding configuration properties, the infrastructure is there to copy the generated file where it should be and we can include it easily in the doc.

I also fixed the broken image. With Antora, the images need to be put in a very specific directory to work properly. The build does the necessary magic to also make it work with the test output.

Finally, now Dependabot will be properly triggered. Some of our dependencies had the file but Dependabot not enabled.

I released 0.5.0 today with all the updates and changes.