[Enhancement] Unified Plugin Management - Core Framework and Plugin Integration (Part 1/3)

[WangzJi]

Is your feature request related to a problem? Please describe.
This is the first sub-issue of the Unified Plugin Management System (#14049 ). It establishes the foundational interfaces, central manager skeleton, and adapts existing plugin managers with state-check logic.

Describe the solution you'd like

Goal

Establish the foundational SPI interfaces, central manager skeleton, and integrate with existing plugin managers.

Key Components

Phase A: Core Framework and SPI Definition

• Define PluginType (8 types) and PluginStateChecker interfaces
• Implement PluginConfigSpec and ConfigItemDefinition for configuration abstraction
• Implement the base UnifiedPluginManager for plugin discovery and registration

Phase B: Plugin Integration and Management API (V3)

• Refactor 6 existing managers (e.g., AuthPluginManager, NacosTracePluginManager) to include state-check logic
• Implement PluginControllerV3 with endpoints for listing, detailing, and updating plugin status/config
• Define VO and Form models for data transfer

Dependencies
None - This is the foundation for other sub-issues.

Describe alternatives you've considered
Implementing Phase A and Phase B as separate sub-issues was considered, but they are tightly coupled and benefit from being developed together.

Additional context

• Related to Plugin Switch Management and Console Page #14049
• Blocks: Sub-issue (Cluster Consistency), Sub-issue (Console UI)
• PR should focus on establishing stable interfaces before cluster state and UI development

[github-actions]

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