feat: use CDS, move to builder and runner image

[bendehaan]

What kind of changes does this PR include?

• Fixes or refactors
• A new challenge
• Additional documentation
• Something else

Description

Use Java Class Data Sharing for improved memory behaviour and startup

References

• https://docs.spring.io/spring-boot/reference/packaging/class-data-sharing.html
• https://docs.oracle.com/en/java/javase/23/docs/specs/man/java.html#application-class-data-sharing

Checklist:

• All the contributions made are solely the work of me and my co-authors
• I tested the changes in this PR (if applicable)
• I added unit tests to ensure my change works (when change in Java or on front-end code)
• I added UI tests to ensure my UI changes work (when change in the overall UI, not needed if just adding a challenge)
• The PR passes pre-commit hooks and automated tests

[commjoen]

Thank you! did quite a few tests locally and on arcane and it looks great! We can handle quite a few more requests! This should give us the space to start loading more resources for client-side LLM setups to hunt secrets ;-).