Huge role refactoring/cleanup. Other commits will propably follow. Because some bugs will exist. Still important for longrun and also for auto docs/help/slideshow generation

roles/core-security/README.md

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+# System Security
+
+## Description
+
+This role configures security-related settings on the target system to ensure that essential security services are properly managed. It reinforces system security by integrating with related roles and enforcing best practices.
+
+## Overview
+
+The role focuses on:
+- Configuring key security services such as [SSH](https://en.wikipedia.org/wiki/Secure_Shell).
+- Integrating with other security roles to maintain a robust system security posture.
+- Ensuring that security configurations are applied consistently across the system.
+
+## Purpose
+
+The primary purpose of this role is to enhance overall system security by managing and configuring essential security services and settings.
+
+## Features
+
+- **Security Configuration:** Applies recommended security settings for core services.
+- **Integration:** Works alongside related roles such as [sshd](https://en.wikipedia.org/wiki/SSH_daemon) to provide comprehensive security management.