Add plugin class diagram and README reference

[njlane314]

Summary

• Document plug-in interfaces and managers in a new PlantUML diagram
• Reference the plug-in architecture diagram in the README

Testing

• ctest --output-on-failure (no tests found)

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https://chatgpt.com/codex/tasks/task_e_68b87af2f73c832ea4501ca04dcc55b0

[chatgpt-codex-connector]

Codex Review: Here are some suggestions.

rarexsec-analysis/docs/plugin_class_diagram.puml

Lines 20 to 34 in 1c16ba0

	interface IAnalysisPlugin {
	+onInitialisation()
	+onEvent()
	+onFinalisation()
	}
	class AnalysisPluginManager {
	+register()
	}
	interface IPlotPlugin {
	+run()
	}
	class PlotPluginManager {

[P1] Align diagram with real plugin APIs

The new PlantUML diagram depicts IAnalysisPlugin exposing only onInitialisation, onEvent, and onFinalisation and both plugin managers having a single register() entry point. In the actual headers (libplug/IAnalysisPlugin.h and the manager classes) the required callbacks are onInitialisation, onPreSampleProcessing, onPostSampleProcessing, and onFinalisation, and managers expose loadPlugins() plus various notify*/run operations. Anyone implementing a plug‑in from this diagram will target non‑existent methods and miss mandatory ones, leading to build failures and misaligned documentation. Please update the diagram (and the README reference implicitly created) to mirror the real API surface.

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