Summary of Changes

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This pull request significantly refactors the server-side plugin architecture by centralizing all plugin lifecycle management into a single ServerPlugin interface through the use of default methods. This change streamlines the plugin initialization process within ControllerServer by introducing a more robust two-phase loading mechanism, which allows for dynamic registration of a ModuleChecker. The overall impact is a more cohesive, flexible, and easier-to-maintain plugin system.

Highlights

• Unified Plugin Lifecycle: The ControllerInitializationPlugin interface was removed, and its lifecycle methods (e.g., checkPreconditions, init, recover, finalizeStart, preShutdownHook, postShutdownHook) were integrated into the ServerPlugin interface as default methods. This consolidates server-side plugin lifecycle management into a single, more flexible interface.
• Simplified OptionalPlugin Validation: The validate() method in OptionalPlugin now includes a default implementation that always returns true, eliminating the need for AbstractPlugin to explicitly override it.
• Enhanced Plugin Loading Mechanism: The ServerPluginManager was refactored to support a two-phase plugin loading process. It now initially scans for plugins without a ModuleChecker to allow plugins to register one, and then rebuilds the manager with the registered ModuleChecker to filter plugins, improving flexibility in plugin initialization.
• Streamlined VersionManagerPlugin: The VersionManagerPlugin was simplified by removing several empty lifecycle methods and consolidating its core logic into the init method, aligning with the new ServerPlugin default method approach.