Refactor: Organize Ansible project structure

- Reorganized Ansible project structure to follow best practices.
- Created dedicated directories: , , , , and .
- Categorized playbooks into  (host-specific) and  (service-specific).
- Moved all roles into the  directory and standardized their naming conventions.
- Relocated  to  for better variable management.
- Renamed  to  to reflect its global variable scope.
- Created  to correctly set the  to the new  directory.
- Moved  and  into the  directory.
- Added  to  providing explanations for common commands.
- Cleaned up  directories from all individual roles to centralize version control.

roles/security/tasks/main.yml

@@ -0,0 +1,21 @@
+---
+- name: Include OS-specific variables.
+  include_vars: "{{ ansible_os_family }}.yml"
+
+# Fail2Ban
+- include_tasks: fail2ban.yml
+  when: security_fail2ban_enabled | bool
+
+# SSH
+- include_tasks: ssh.yml
+
+# Autoupdate
+- include_tasks: autoupdate-RedHat.yml
+  when:
+    - ansible_os_family == 'RedHat'
+    - security_autoupdate_enabled | bool
+
+- include_tasks: autoupdate-Debian.yml
+  when:
+    - ansible_os_family == 'Debian'
+    - security_autoupdate_enabled | bool