Add RESTHeart native image metadata entries

[ujibang]

RESTHeart is a framework for building cloud-native HTTP microservices. It’s designed for the JVM and optimized for GraalVM, using Java Virtual Threads for high-performance concurrent processing.

RESTHeart provides built-in authentication, authorization, and MongoDB APIs.

What does this PR do?

This commit adds 7 RESTHeart modules to the library list:

• org.restheart:restheart (Core platform)
• org.restheart:restheart-commons (Common utilities)
• org.restheart:restheart-graphql (GraphQL services)
• org.restheart:restheart-metrics (Metrics and monitoring)
• org.restheart:restheart-mongodb (MongoDB services)
• org.restheart:restheart-polyglot (JavaScript/polyglot support)
• org.restheart:restheart-security (Authentication/authorization)

All modules include embedded reachability metadata since version 8.0.0 and are tested with GraalVM Native Image builds.

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

• none

Checklist before merging

• [X ] I have considered including reachability metadata directly in the library or the framework (see our contributing document)
• [X ] 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)
• [X ] 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)
• [X ] I have properly formatted metadata files (see our formatting guide)
• [X ] I have added thorough tests (see the tests section from our contributing document)
• [X ] I have filled all places where my pull request accesses files, network, docker, or any other external service (see the section above)