feat(api): expose runtime parameters over admin rpc

[317787106]

What does this PR do?

Adds the admin_getRuntimeParameters method on top of the Admin RPC and IPC transport introduced by #82.

• Exports an explicit top-level @Exportable allowlist from the active runtime parameter implementation.
• Excludes committee and governance defaults whose effective values are maintained by the database.
• Returns top-level keys in field-name lexicographical order.
• Omits eventPluginConfig.dbConfig and recursively redacts fields with secret-like names, including DNS publishing credentials.
• Snapshots storage configuration and dynamic peer lists so callers never observe transient or partially updated values.

Why is this separate?

Runtime configuration export has a wider review surface than the Admin RPC transport itself: it defines a public allowlist, traverses nested configuration objects, filters secrets, and requires consistency while dynamic configuration is being reloaded. Keeping it in a stacked PR makes the transport changes in #82 easier to review independently.

Dependency

This PR is based on feature/admin_rpc and should be reviewed and merged after #82. Once #82 is merged, the base can be changed to develop.

Testing

• CommonParameterExporterTest
• DynamicArgsTest
• RelayServiceTest
• EffectiveCheckServiceTest
• IpcClientTest
• IpcServiceTest
• checkstyleMain and checkstyleTest

All listed tests and checks pass locally on JDK 17 / aarch64.