Add support for @JsonNaming to jackson-databind

[ThomasVitale]

What does this PR do?

Add reachability metadata to com.fasterxml.jackson.core:jackson-databind in order to get access to the internal classes of PropertyNamingStrategies when using the @JsonNaming annotation.

Code sections where the PR accesses files, network, docker or some external service

No access to files, network, docker or external service.

Checklist before merging

• I have considered including reachability metadata directly in the library or the framework (see our contributing document)
• I am the original author of all content provided in the pull request, and I did not copy the content from any other source (see the tests section from our contributing document)
• For all tests where I am not the sole author, I have added a comment that proves I may publish them under the specified license (see the tests section from our contributing document)
• I have properly formatted metadata files (see our formatting guide)
• I have added thorough tests (see the tests section from our contributing document)
• I have filled all places where my pull request accesses files, network, docker, or any other external service (see the section above)

[yawkat]

@melix i think you have to handle CI and merging