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-ctl-hlth-msmtp/tasks/main.yml

@@ -0,0 +1,35 @@
+- block:
+  - name: Include dependency 'sys-ctl-alm-telegram'
+    include_role:
+      name: sys-ctl-alm-telegram
+    when: run_once_sys_ctl_alm_telegram is not defined
+  - include_tasks: utils/run_once.yml
+  when: run_once_sys_ctl_hlth_msmtp is not defined
+
+- name: "create {{ health_msmtp_folder }}"
+  file:
+    path: "{{ health_msmtp_folder }}"
+    state: directory
+    mode: "0755"
+
+- name: create sys-ctl-hlth-msmtp.sh
+  template:
+    src: sys-ctl-hlth-msmtp.sh.j2
+    dest: "{{ health_msmtp_folder }}sys-ctl-hlth-msmtp.sh"
+    mode: '0755'
+
+- name: create sys-ctl-hlth-msmtp{{ SYS_SERVICE_SUFFIX }}
+  template:
+    src: sys-ctl-hlth-msmtp.service.j2
+    dest: /etc/systemd/system/sys-ctl-hlth-msmtp{{ SYS_SERVICE_SUFFIX }}
+  notify: reload sys-ctl-hlth-msmtp service
+
+- name: "set 'service_name' to '{{ role_name }}'"
+  set_fact:
+    service_name: "{{ role_name }}"
+
+- name: include role for sys-timer for {{ service_name }}
+  include_role:
+    name: sys-timer
+  vars:
+    on_calendar: "{{ SYS_SCHEDULE_HEALTH_MSMTP }}"