Refactor systemctl services and categories due to alarm bugs

This commit restructures systemctl service definitions and category mappings.

Motivation: Alarm-related bugs revealed inconsistencies in service and role handling.

Preparation step: lays the groundwork for fixing the alarm issues by aligning categories, roles, and service templates.

roles/sys-timer-cln-bkps/README.md

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+# Cleanup Backups Timer
+
+## Description
+
+This role sets up a systemd timer to schedule the periodic cleanup of old backups. It leverages the sys-ctl-cln-bkps role to perform the actual cleanup operation.
+
+## Overview
+
+Optimized for automated maintenance, this role:
+- Sets a fact for the service name.
+- Integrates with the [sys-timer](../sys-timer/README.md) role to schedule sys-ctl-cln-backups tasks at defined intervals.
+
+## Purpose
+
+The primary purpose of this role is to automate the scheduling of backup cleanup operations using a systemd timer, ensuring that backup storage remains within defined limits.
+
+## Features
+
+- **Timer Scheduling:** Configures a systemd timer to trigger the backup cleanup service.
+- **Role Integration:** Works in conjunction with the sys-ctl-cln-bkps role.
+- **Idempotency:** Ensures the timer tasks execute only once per playbook run.

roles/sys-timer-cln-bkps/meta/main.yml

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+galaxy_info:
+  author: "Kevin Veen-Birkenbach"
+  description: "Schedules periodic cleanup of old backups by configuring a systemd timer to trigger the sys-ctl-cln-bkps role."
+  license: "Infinito.Nexus NonCommercial License"
+  license_url: "https://s.infinito.nexus/license"
+  company: |
+    Kevin Veen-Birkenbach
+    Consulting & Coaching Solutions
+    https://www.veen.world
+  min_ansible_version: "2.9"
+  platforms:
+  - name: Linux
+    versions:
+    - all
+  galaxy_tags:
+  - timer
+  - backup
+  - cleanup
+  - automation
+  repository: "https://s.infinito.nexus/code"
+  issue_tracker_url: "https://s.infinito.nexus/issues"
+  documentation: "https://docs.infinito.nexus"

roles/sys-timer-cln-bkps/tasks/01_core.yml

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+- name: Include dependencies
+  include_role:
+    name: '{{ item }}'
+  loop:
+  - sys-ctl-cln-bkps
+  - sys-rst-daemon
+
+- name: set service_name to sys-ctl-cln-backups
+  set_fact:
+    service_name: "sys-ctl-cln-backups"
+
+- name: "include role for sys-timer for {{ service_name }}"
+  include_role:
+    name: sys-timer
+  vars:
+    on_calendar: "{{SYS_SCHEDULE_CLEANUP_BACKUPS}}"

roles/sys-timer-cln-bkps/tasks/main.yml

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+- block:
+  - include_tasks: 01_core.yml
+  - name: run the cleanup_backups_timer tasks once
+    set_fact:
+      run_once_sys_timer_cln_bkps: true
+  when: run_once_sys_timer_cln_bkps is not defined