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/mariadb/tasks/main.yml

@@ -0,0 +1,31 @@
+---
+# tasks file for mariaDB_install
+- name: Install
+  ansible.builtin.package:
+    name:
+      - mariadb-server
+      - mycli
+    state: present
+
+- name: Start and enabled
+  ansible.builtin.service:
+    name: mariadb
+    state: started
+    enabled: true
+
+- name: Gather the package facts
+  ansible.builtin.package_facts:
+    manager: auto
+
+- name: Check package version
+  ansible.builtin.debug:
+    msg: "{{ ansible_facts.packages['mariadb-server'][0].version[2:7] }}"
+
+- name: Copy config
+  template:
+    src: ../templates/50-server.cnf
+    dest: /etc/mysql/mariadb.conf.d/50-server.cnf
+    owner: root
+    group: root
+    mode: "0644"
+  notify: mariadb restart