[Studio] Add metadata list AI tools

[Aias00]

Summary

• add L1 read-only rmq.topic.list and rmq.group.list tools to the Studio AI tool catalog
• reuse MetadataService and return schema-validated minimal projections for topics and consumer groups
• cover discovery, capability checks, input validation, output validation, and response field leak prevention in tests

Scope

• RocketMQ Studio contest scope: Track 3 / RIP-3 AI Native tool surface
• Related to [Studio][RIP-3] Add a catalog-driven read-only tool gateway #513

Tests

• JAVA_HOME=/Users/aias/Library/Java/JavaVirtualMachines/openjdk-21.0.2/Contents/Home mvn -Dtest=ToolCatalogTest,ToolGatewayServiceTest test
• JAVA_HOME=/Users/aias/Library/Java/JavaVirtualMachines/openjdk-21.0.2/Contents/Home mvn test
• git diff --check

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[Aias00]

Superseded by #642. Consolidated with related AI resource tool catalog changes to reduce review overhead while preserving the same scoped fixes and tests.